Diesel Engine Plugs

Genuine Diesel Engine Plugs for Onan, Cummins, and Fleetguard Power Engines

Maintain the integrity and efficiency of your diesel power equipment with our authentic Diesel Engine Plugs. Engineered specifically for Onan, Cummins, and Fleetguard engines, these plugs ensure a perfect fit and long-lasting durability under demanding conditions.

Diesel Engine Plugs - Reliable & Genuine Components by Onan, Cummins, Fleetguard

Our selection features a range of genuine diesel engine plugs designed to seal engine ports effectively, preventing leaks and protecting your engine from contaminants. Crafted from premium materials, these plugs offer superior corrosion resistance and thermal stability.

  • Authentic Quality: Direct-fit plugs manufactured to OEM specifications for trusted performance.
  • Durable Construction: High-grade materials ensure longevity and withstand harsh operating environments.
  • Wide Compatibility: Suitable for various Onan, Cummins, and Fleetguard diesel engine models.

Upgrade your diesel engine maintenance with our genuine plugs, designed to maximize reliability and extend engine life.

Why Choose Our Diesel Engine Plugs?

We provide only genuine, brand-approved parts to ensure optimal engine performance, backed by expert guidance and trusted customer support for your peace of mind.

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  • CUMMINS 3973071 - THREADED PLUG - Original OEM part - Image 1
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    CUMMINS 3973071 THREADED PLUG Original OEM part

    CUMMINS

    $24.54
    $22.42
    Engineered for Precision, Built to Last: Experience uncompromised sealing performance with the CUMMINS 3973071 threaded plug, designed to maintain system integrity under demanding conditions...
    $24.54
    $22.42
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    Price:
    $24.54
    $22.42
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  • CUMMINS 3959574 - PLUG,PISTON COOLING Original OEM part PACK OF 2 - Original OEM part - Image 1
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    CUMMINS 3959574 PLUG,PISTON COOLING Original OEM part PACK OF 2

    CUMMINS

    $40.52
    $37.01
    Engineered for Precision Cooling Efficiency Durable Construction Ensures Long-Term Performance Certified Genuine OEM Part from CUMMINS CUMMINS 3959574 PLUG, PISTON COOLING – Powering Reliability...
    $40.52
    $37.01
    Add to Cart
    Qty in Cart: 0
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    $40.52
    $37.01
    Subtotal:
  • CUMMINS 3945093 - PLUG EXPANSION -IMAGE1
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    CUMMINS 3945093 EXPANSION PLUG Original OEM part

    CUMMINS

    $7.65
    $6.99
    Engineered Precision for Enduring Performance Robust Sealing to Maintain Optimal Engine Function 100% Genuine Cummins OEM Component for Guaranteed Compatibility CUMMINS 3945093 EXPANSION PLUG—Power...
    $7.65
    $6.99
    Add to Cart
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    $7.65
    $6.99
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  • FLEETGUARD 3933978 - PLUG & WAS Original FLEETGUARD OEM part - Original OEM part - Image 1
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    FLEETGUARD 3933978 PLUG & WAS Original FLEETGUARD OEM part

    FLEETGUARD

    $204.73
    $187.02
    Fleetguard 3933978 - PLUG & WAS FLG3933978 Find top-quality replacement parts for your outdoor equipment at our store, including the Fleetguard 3933978 - PLUG & WAS. Crafted with precision and...
    $204.73
    $187.02
    Add to Cart
    Qty in Cart: 0
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    Price:
    $204.73
    $187.02
    Subtotal:
  • CUMMINS 3926910 - THREADED PLUG - Original OEM part - Image 1
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    CUMMINS 3926910 THREADED PLUG Original OEM part

    CUMMINS

    $29.50
    $26.95
    Engineered to perform flawlessly under demanding conditions Designed for leak-proof sealing and superior durability 100% genuine OEM part ensuring perfect compatibility with Cummins systems Secure...
    $29.50
    $26.95
    Add to Cart
    Qty in Cart: 0
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    $29.50
    $26.95
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  • CUMMINS 3924148 - PLUG THREADED-IMAGE1
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    CUMMINS 3924148 THREADED PLUG Original OEM part

    CUMMINS

    $17.19
    $15.71
    Engineered for seamless integration and durability under demanding conditions Designed to maintain system integrity by preventing leaks and contamination Crafted as a 100% OEM Cummins part to ensure...
    $17.19
    $15.71
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $17.19
    $15.71
    Subtotal:
  • CUMMINS 3922073 - EXPANSION PLUG - Original OEM part - Image 1
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    CUMMINS 3922073 EXPANSION PLUG Original OEM part

    CUMMINS

    $11.73
    $10.71
    Engineered Precision for Ultimate Reliability Seals your engine block to prevent leaks and maintain pressure integrity Crafted from premium materials to withstand extreme conditions and ensure...
    $11.73
    $10.71
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $11.73
    $10.71
    Subtotal:
  • CUMMINS 3920706 - PLUG EXPANSION
    Add to Cart

    CUMMINS 3920706 EXPANSION PLUG Original OEM part PACK OF 2

    CUMMINS

    $17.00
    $15.53
    Cummins 3920706 - EXPANSION PLUG MINS3920706 Find the original 3920706 - EXPANSION PLUG from Cummins at our store. We take pride in offering genuine parts, ensuring optimal performance and longevity...
    $17.00
    $15.53
    Add to Cart
    Qty in Cart: 0
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    Price:
    $17.00
    $15.53
    Subtotal:
  • CUMMINS 3911638 - PLUG THREADED - Image 1
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    CUMMINS 3911638 THREADED PLUG Original OEM part PACK OF 2

    CUMMINS

    $72.92
    $66.61
    Cummins 3911638 - THREADED PLUG MINS3911638 Our store proudly offers the original Cummins 3911638 - THREADED PLUG, designed to ensure top performance for your outdoor equipment. Trust in the quality...
    $72.92
    $66.61
    Add to Cart
    Qty in Cart: 0
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    Price:
    $72.92
    $66.61
    Subtotal:
  • CUMMINS 3910248 - PLUG O RING - Image 1
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    CUMMINS 3910248 ORING PLUG Original OEM part

    CUMMINS

    $22.30
    $20.38
    Precision-engineered sealing for uncompromised engine reliability Durable Oring material designed to withstand harsh conditions Seamless compatibility as a genuine OEM Cummins part CUMMINS 3910248...
    $22.30
    $20.38
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $22.30
    $20.38
    Subtotal:
  • CUMMINS 3907555 - EXPANSION PLUG - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3907555 EXPANSION PLUG Original OEM part

    CUMMINS

    $19.23
    $17.56
    Cummins 3907555 - EXPANSION PLUG MINS3907555 When it comes to finding reliable and genuine replacement parts like the 3907555 - EXPANSION PLUG by Cummins, our store stands out as the best choice. We...
    $19.23
    $17.56
    Add to Cart
    Qty in Cart: 0
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    Price:
    $19.23
    $17.56
    Subtotal:
  • CUMMINS 3906619 - PIPE PLUG Original OEM part PACK OF 2 - Original OEM part - Image 1
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    CUMMINS 3906619 PIPE PLUG Original OEM part PACK OF 2

    CUMMINS

    $23.04
    $21.05
    Precision-Engineered Reliability: Experience flawless sealing designed to maintain system integrity under demanding conditions. Durable Construction: Crafted from premium materials to withstand high...
    $23.04
    $21.05
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $23.04
    $21.05
    Subtotal:
  • CUMMINS 3904181 - THREADED PLUG - Original OEM part - Image 1
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    CUMMINS 3904181 THREADED PLUG Original OEM part

    CUMMINS

    $15.84
    $14.47
    Precision Engineered for Enduring Power Integrity High-Grade Material Construction Ensuring Leak-Proof Seal Designed for Seamless Compatibility with Cummins Systems Certified Genuine OEM Cummins...
    $15.84
    $14.47
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $15.84
    $14.47
    Subtotal:
  • CUMMINS 3901969 - PLUG EXPANSION-IMAGE1
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    CUMMINS 3901969 EXPANSION PLUG Original OEM part

    CUMMINS

    $15.05
    $13.75
    Engineered for Reliability: Precision-crafted to maintain coolant system integrity and prevent leaks under high pressure. Durable Material Composition: Constructed from premium-grade metals ensuring...
    $15.05
    $13.75
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $15.05
    $13.75
    Subtotal:
  • CUMMINS 3900965 - PLUG EXPANSION-IMAGE1
    Add to Cart

    CUMMINS 3900965 EXPANSION PLUG Original OEM part

    CUMMINS

    $14.56
    $13.30
    Precision engineered for uncompromising reliability Designed to safeguard your engine's cooling system from leaks Crafted as an OEM Cummins component for guaranteed compatibility CUMMINS 3900965...
    $14.56
    $13.30
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $14.56
    $13.30
    Subtotal:
  • CUMMINS 3900955 - PLUG EXPANSION - Image 1
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    CUMMINS 3900955 EXPANSION PLUG Original OEM part

    CUMMINS

    $12.14
    $11.09
    Precision engineered to uphold Cummins’ legacy of excellence and durability Seals critical engine coolant passages, preventing leaks and maintaining optimal thermal management Manufactured to strict...
    $12.14
    $11.09
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $12.14
    $11.09
    Subtotal:
  • CUMMINS 3895479 - EXPANSION PLUG Original OEM part PACK OF 2 - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3895479 EXPANSION PLUG Original OEM part PACK OF 2

    CUMMINS

    $35.54
    $32.46
    Power engineered, precision crafted: ensure your Cummins engine maintains its robust performance and durability. Corrosion-resistant and perfectly sealed: designed to withstand challenging operating...
    $35.54
    $32.46
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $35.54
    $32.46
    Subtotal:
  • CUMMINS 3882585 - EXPANSION PLUG - Original OEM part
    Add to Cart

    CUMMINS 3882585 EXPANSION PLUG Original OEM part PACK OF 2

    CUMMINS

    $23.24
    $21.23
    Engineered precision for uncompromised powertrain integrity Durable construction ensuring long-lasting sealing performance OEM certified for seamless compatibility and safety compliance Authentic...
    $23.24
    $21.23
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $23.24
    $21.23
    Subtotal:
  • CUMMINS 3823343 - PLUG, CONNECTOR CAVITY - Original OEM part - Image 1
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    CUMMINS 3823343 PLUG, CONNECTOR CAVITY Original OEM part

    CUMMINS

    $3.76
    $3.44
    Engineered for flawless connectivity and durability Designed to maintain system integrity under demanding conditions 100% genuine OEM Cummins part ensuring full compatibility Power your peace of...
    $3.76
    $3.44
    Add to Cart
    Qty in Cart: 0
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    Price:
    $3.76
    $3.44
    Subtotal:
  • CUMMINS 3681907 - PLUG,GEAR COVER - Original OEM part - Image 1
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    CUMMINS 3681907 PLUG,GEAR COVER Original OEM part

    CUMMINS

    $80.34
    $73.39
    Cummins 3681907 - PLUG,GEAR COVER MINS3681907 Find the original "3681907 - PLUG, GEAR COVER" from Cummins at our store. Guaranteed authenticity for product SKU "MINS3681907" ensures a perfect fit...
    $80.34
    $73.39
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $80.34
    $73.39
    Subtotal:
  • CUMMINS 3680534 - PLUG THREADED - Image 1
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    CUMMINS 3680534 THREADED PLUG Original OEM part

    CUMMINS

    $58.00
    $52.99
    Precision engineered for seamless integration to maintain your Cummins engine’s operational excellence. Durable corrosion-resistant material ensures enduring protection in demanding environments...
    $58.00
    $52.99
    Add to Cart
    Qty in Cart: 0
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    Price:
    $58.00
    $52.99
    Subtotal:
  • CUMMINS 3678923 - PLUG THREADED-IMAGE1
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    CUMMINS 3678923 THREADED PLUG Original OEM part PACK OF 2

    CUMMINS

    $24.66
    $22.53
    Engineering excellence that safeguards your engine's integrity Durable threaded plug ensuring leak-free sealing under demanding conditions Manufactured as a genuine OEM CUMMINS component for maximum...
    $24.66
    $22.53
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $24.66
    $22.53
    Subtotal:
  • CUMMINS 3678921 - PLUG THREADED - Image 1
    Add to Cart

    CUMMINS 3678921 THREADED PLUG Original OEM part

    CUMMINS

    $52.13
    $47.62
    Cummins 3678921 - THREADED PLUG MINS3678921 Find the authentic Cummins 3678921 - THREADED PLUG at our store, MINS3678921. Crafted to precision, this part ensures optimal performance and durability...
    $52.13
    $47.62
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $52.13
    $47.62
    Subtotal:
  • CUMMINS 3678873 - THREADED PLUG - Original OEM part
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    CUMMINS 3678873 THREADED PLUG Original OEM part

    CUMMINS

    $28.99
    $26.49
    Engineered Precision for Unrivaled Reliability Seals critical engine and power system components with exact fitment Durable construction ensures long-lasting leak prevention Certified genuine OEM...
    $28.99
    $26.49
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $28.99
    $26.49
    Subtotal:
  • CUMMINS 3678610 - THREADED PLUG - Original OEM part
    Add to Cart

    CUMMINS 3678610 THREADED PLUG Original OEM part

    CUMMINS

    $28.64
    $26.16
    Engineered Precision, Trusted Performance Durable corrosion-resistant finish for long-lasting sealing integrity Designed for effortless installation ensuring perfect compatibility 100% Genuine OEM...
    $28.64
    $26.16
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $28.64
    $26.16
    Subtotal:
  • CUMMINS 3645841 - EXPANSION PLUG Original OEM part PACK OF 2 - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3645841 EXPANSION PLUG Original OEM part PACK OF 2

    CUMMINS

    $35.77
    $32.68
    Cummins 3645841 - EXPANSION PLUG MINS3645841 Find the original 3645841 - EXPANSION PLUG by Cummins at our online store, SKU "MINS3645841." With a commitment to quality, we offer this essential...
    $35.77
    $32.68
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $35.77
    $32.68
    Subtotal:
  • CUMMINS 3629168 - EXPANSION PLUG Original OEM part PACK OF 4 - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3629168 EXPANSION PLUG Original OEM part PACK OF 4

    CUMMINS

    $65.60
    $59.93
    Precision engineered for peak reliability and longevity Pressure-sealing design to protect critical engine components Durable materials ensure maximum resistance to wear and corrosion 100% OEM...
    $65.60
    $59.93
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $65.60
    $59.93
    Subtotal:
  • CUMMINS 3628604 - PIPE PLUG Original OEM part PACK OF 2 - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3628604 PIPE PLUG Original OEM part PACK OF 2

    CUMMINS

    $23.97
    $21.90
    Engineered Precision, Trusted Durability: Secure your power system with the exact CUMMINS 3628604 PIPE PLUG built to Cummins’ stringent standards. Seamless Integration: This pipe plug guarantees a...
    $23.97
    $21.90
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $23.97
    $21.90
    Subtotal:
  • CUMMINS 3420881 - THREADED PLUG - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3420881 THREADED PLUG Original OEM part

    CUMMINS

    $44.62
    $40.76
    Engineered Precision for Ultimate Reliability: Trust in a threaded plug designed to maintain system integrity and prevent leaks under high-pressure conditions. Durability that Endures Demanding...
    $44.62
    $40.76
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $44.62
    $40.76
    Subtotal:
  • CUMMINS 3162742 - PLUG,CONNECTOR CAVITY - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3162742 PLUG,CONNECTOR CAVITY Original OEM part

    CUMMINS

    $10.35
    $9.45
    Precision-engineered for unmatched compatibility and durability in every connection. Ensures optimal electrical continuity protecting your generator’s performance. Designed to withstand harsh...
    $10.35
    $9.45
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $10.35
    $9.45
    Subtotal:
  • CUMMINS 3162735 - CAVITY PLUG Original OEM part PACK OF 2 - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3162735 CAVITY PLUG Original OEM part PACK OF 2

    CUMMINS

    $18.49
    $16.89
    Engineered to perfection for enduring power and reliability. Robust sealing capability ensures optimal engine integrity. Precision manufactured to maintain system efficiency and safety. Certified...
    $18.49
    $16.89
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $18.49
    $16.89
    Subtotal:
  • CUMMINS 3092396 - EXPANSION PLUG Original OEM part PACK OF 4 - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3092396 EXPANSION PLUG Original OEM part PACK OF 4

    CUMMINS

    $34.93
    $31.91
    Precision-engineered reliability to maintain your engine’s optimal sealing. Durable construction crafted to withstand high temperatures and pressures. Certified genuine OEM part ensuring flawless...
    $34.93
    $31.91
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $34.93
    $31.91
    Subtotal:
  • CUMMINS 3066325 - THREADED PLUG Original OEM part PACK OF 5 - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3066325 THREADED PLUG Original OEM part PACK OF 5

    CUMMINS

    $82.50
    $75.37
    Engineered Precision for Reliable Sealing Durable Construction for Long-Term Durability 100% Genuine OEM CUMMINS Quality and Compatibility Seal Your Power with the Unmatched Excellence of CUMMINS...
    $82.50
    $75.37
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $82.50
    $75.37
    Subtotal:
  • CUMMINS 3055069 - PLUG THREADED - Image 1
    Add to Cart

    CUMMINS 3055069 THREADED PLUG Original OEM part

    CUMMINS

    $40.90
    $37.37
    Cummins 3055069 - THREADED PLUG MINS3055069 When it comes to finding genuine replacement parts like the 3055069 - THREADED PLUG for your outdoor equipment, look no further than our store. We proudly...
    $40.90
    $37.37
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $40.90
    $37.37
    Subtotal:
  • CUMMINS 3053756 - ORING PLUG - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3053756 ORING PLUG Original OEM part

    CUMMINS

    $25.06
    $22.89
    Engineered precision for uncompromised sealing integrity Durable construction designed to withstand extreme engine conditions Certified Cummins OEM part ensuring exact compatibility and...
    $25.06
    $22.89
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $25.06
    $22.89
    Subtotal:
  • CUMMINS 3046202 - THREADED PLUG - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3046202 THREADED PLUG Original OEM part

    CUMMINS

    $29.05
    $26.54
    Precision-engineered sealing for long-lasting engine protection High-quality material composition designed to withstand extreme conditions 100% genuine CUMMINS OEM component guaranteeing perfect...
    $29.05
    $26.54
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $29.05
    $26.54
    Subtotal:
  • CUMMINS 3045048 - INJECTOR ORIFICE PLUG - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3045048 INJECTOR ORIFICE PLUG Original OEM part

    CUMMINS

    $48.78
    $44.56
    Precision in every drop: Optimized fuel delivery for peak engine efficiency Robust durability: Crafted to withstand rigorous operational demands Guaranteed OEM quality: Authentic Cummins component...
    $48.78
    $44.56
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $48.78
    $44.56
    Subtotal:
  • CUMMINS 3045041 - INJECTOR ORIFICE PLUG - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3045041 INJECTOR ORIFICE PLUG Original OEM part

    CUMMINS

    $26.20
    $23.94
    Precision in every drop, reliability in every engine. Engineered for flawless fuel flow control to maximize combustion efficiency. Durable design to withstand demanding operating conditions and...
    $26.20
    $23.94
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $26.20
    $23.94
    Subtotal:
  • CUMMINS 3045015 - INJECTOR ORIFICE PLUG - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3045015 INJECTOR ORIFICE PLUG Original OEM part

    CUMMINS

    $82.44
    $75.31
    Engineered Precision, Enduring Performance High-Quality Injector Flow Control for Optimal Fuel Efficiency Durable Construction to Withstand Rigorous Engine Conditions 100% Genuine OEM Cummins Part...
    $82.44
    $75.31
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $82.44
    $75.31
    Subtotal:
  • CUMMINS 3045010 - INJECTOR ORIFICE PLUG Original OEM part PACK OF 2 - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3045010 INJECTOR ORIFICE PLUG Original OEM part PACK OF 2

    CUMMINS

    $75.26
    $68.75
    Precision in Every Component: Engineered to exact Cummins standards for guaranteed compatibility and performance. Durability You Can Depend On: Crafted from premium materials to withstand...
    $75.26
    $68.75
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $75.26
    $68.75
    Subtotal:
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