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 5365328 - ORING PLUG - Original OEM part - Image 1
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    CUMMINS 5365328 ORING PLUG Original OEM part

    CUMMINS

    $11.55
    $10.55
    Precision-engineered sealing for optimal engine protection Durable materials built to withstand demanding operating conditions Guaranteed genuine OEM part from Cummins for full system...
    $11.55
    $10.55
    Add to Cart
    Qty in Cart: 0
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    $11.55
    $10.55
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  • CUMMINS 5362501 - EXPANSION PLUG - Original OEM part - Image 1
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    CUMMINS 5362501 EXPANSION PLUG Original OEM part

    CUMMINS

    $6.63
    $6.05
    Precision engineered for reliable engine sealing High-grade materials designed to withstand extreme conditions Certified OEM Cummins quality ensuring perfect fit and function CUMMINS 5362501...
    $6.63
    $6.05
    Add to Cart
    Qty in Cart: 0
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    Price:
    $6.63
    $6.05
    Subtotal:
  • CUMMINS 5333468 - PIPE PLUG - Original OEM part - Image 1
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    CUMMINS 5333468 PIPE PLUG Original OEM part

    CUMMINS

    $5.99
    $5.48
    Precision engineered for uncompromising system integrity Durable construction ensures long service life even in demanding conditions Designed exclusively as an OEM component by Cummins for...
    $5.99
    $5.48
    Add to Cart
    Qty in Cart: 0
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    Price:
    $5.99
    $5.48
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  • CUMMINS 5311248 - ORIFICE PLUG - Original OEM part - Image 1
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    CUMMINS 5311248 ORIFICE PLUG Original OEM part

    CUMMINS

    $63.74
    $58.23
    Precision-engineered reliability: Crafted to exact Cummins specifications for seamless integration. Enhances system efficiency: Controls fuel and airflow for optimal engine performance. Durable OEM...
    $63.74
    $58.23
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $63.74
    $58.23
    Subtotal:
  • CUMMINS 5299991 - PLUG,CYLINDER BORE - Original OEM part - Image 1
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    CUMMINS 5299991 PLUG,CYLINDER BORE Original OEM part

    CUMMINS

    $1,144.84
    $1,045.81
    Precision engineered to maintain engine integrity and performance Durable and resistant to high-pressure environments inside the cylinder bore 100% genuine Cummins OEM component for guaranteed...
    $1,144.84
    $1,045.81
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $1,144.84
    $1,045.81
    Subtotal:
  • CUMMINS 5299555 - PROTECTIVE PLUG - Original OEM part - Image 1
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    CUMMINS 5299555 PROTECTIVE PLUG Original OEM part

    CUMMINS

    $3.92
    $3.58
    Engineered to perfection to safeguard your power system integrity Durable design that maintains effective sealing under extreme conditions 100% authentic OEM from Cummins, guaranteeing full...
    $3.92
    $3.58
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $3.92
    $3.58
    Subtotal:
  • CUMMINS 5299553 - PROTECTIVE PLUG - Original OEM part - Image 1
    Add to Cart

    CUMMINS 5299553 PROTECTIVE PLUG Original OEM part

    CUMMINS

    $3.92
    $3.58
    Engineered Protection for Peak Performance Durable Construction to Guard Vital Components Precision Fitment Ensures Leak-Free Sealing 100% Genuine OEM CUMMINS Part for Total Compatibility CUMMINS...
    $3.92
    $3.58
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $3.92
    $3.58
    Subtotal:
  • CUMMINS 5299227 - LEAK TEST PLUG - Original OEM part - Image 1
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    CUMMINS 5299227 LEAK TEST PLUG Original OEM part

    CUMMINS

    $1,671.50
    $1,526.92
    Precision Sealing for Leak-Free Operation Durable construction designed to withstand harsh engine conditions Certified OEM component from CUMMINS, guaranteeing exact fit and performance CUMMINS...
    $1,671.50
    $1,526.92
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $1,671.50
    $1,526.92
    Subtotal:
  • CUMMINS 5299205 - THREADED PROTECTIVE PLUG - Original OEM part - Image 1
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    CUMMINS 5299205 THREADED PROTECTIVE PLUG Original OEM part

    CUMMINS

    $81.55
    $74.50
    Designed for absolute system integrity and durability. Provides superior sealing to guard against contaminants. Manufactured to exact Cummins OEM specifications for flawless fit and function...
    $81.55
    $74.50
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $81.55
    $74.50
    Subtotal:
  • CUMMINS 5299189 - LEAK TEST PLUG - Original OEM part - Image 1
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    CUMMINS 5299189 LEAK TEST PLUG Original OEM part

    CUMMINS

    $1,779.00
    $1,625.12
    Unwavering Integrity: Engineered for perfect sealing to maintain system pressure and prevent leaks. Long-Lasting Durability: Crafted to withstand demanding operational environments, ensuring...
    $1,779.00
    $1,625.12
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $1,779.00
    $1,625.12
    Subtotal:
  • CUMMINS 5299140 - PROTECTIVE PLUG - Original OEM part - Image 1
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    CUMMINS 5299140 PROTECTIVE PLUG Original OEM part

    CUMMINS

    $6.83
    $6.24
    Cummins 5299140 - PROTECTIVE PLUG MINS5299140 Discover the authentic Cummins 5299140 - PROTECTIVE PLUG at our store, your ultimate destination for high-quality replacement parts. Engineered to...
    $6.83
    $6.24
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $6.83
    $6.24
    Subtotal:
  • CUMMINS 5298879 - PROTECTIVE CAP Original OEM part PACK OF 4 - Original OEM part - Image 1
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    CUMMINS 5298879 PROTECTIVE CAP Original OEM part PACK OF 4

    CUMMINS

    $24.40
    $22.29
    Precision protection engineered by Cummins to safeguard your power system. Durable material designed to withstand harsh conditions and extend component life. Ensures optimal sealing and prevents...
    $24.40
    $22.29
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $24.40
    $22.29
    Subtotal:
  • CUMMINS 5298545 - EXPANSION PLUG INSTALLER - Original OEM part - Image 1
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    CUMMINS 5298545 EXPANSION PLUG INSTALLER Original OEM part

    CUMMINS

    $262.00
    $239.34
    Precision Engineering for Lasting Performance Reliable Installation Tool for Expansion Plugs Durable construction for long-term use 100% Genuine Cummins OEM for guaranteed compatibility CUMMINS...
    $262.00
    $239.34
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $262.00
    $239.34
    Subtotal:
  • CUMMINS 5298544 - EXPANSION PLUG INSTALLER - Original OEM part - Image 1
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    CUMMINS 5298544 EXPANSION PLUG INSTALLER Original OEM part

    CUMMINS

    $208.38
    $190.36
    Engineered for durability and precision installation, ensuring flawless engine maintenance every time Designed to simplify the installation of expansion plugs, reducing downtime and improving...
    $208.38
    $190.36
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $208.38
    $190.36
    Subtotal:
  • CUMMINS 5297086 - THREADED PLUG - Original OEM part - Image 1
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    CUMMINS 5297086 THREADED PLUG Original OEM part

    CUMMINS

    $38.02
    $34.73
    Precision Engineered for Enduring Reliability Designed to Maintain System Integrity Under the Harshest Conditions Corrosion-Resistant Threaded Plug to Protect Critical Components Certified genuine...
    $38.02
    $34.73
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $38.02
    $34.73
    Subtotal:
  • CUMMINS 5296543 - PROTECTIVE PLUG - Original OEM part - Image 1
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    CUMMINS 5296543 PROTECTIVE PLUG Original OEM part

    CUMMINS

    $41.45
    $37.86
    Engineered Precision for Ultimate Protection: Shield key engine ports with the CUMMINS 5296543 Protective Plug, designed to prevent contamination and maintain system integrity. Durable Material...
    $41.45
    $37.86
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $41.45
    $37.86
    Subtotal:
  • CUMMINS 5296520 - PLUG,CYLINDER BORE - Original OEM part - Image 1
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    CUMMINS 5296520 PLUG,CYLINDER BORE Original OEM part

    CUMMINS

    $1,230.14
    $1,123.73
    Engineered for Reliability: Designed to fit seamlessly within your Cummins system, ensuring superior sealing performance and engine health. Durability That Lasts: Crafted from premium materials to...
    $1,230.14
    $1,123.73
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $1,230.14
    $1,123.73
    Subtotal:
  • CUMMINS 5296519 - PLUG,CYLINDER BORE - Original OEM part - Image 1
    Add to Cart

    CUMMINS 5296519 PLUG,CYLINDER BORE Original OEM part

    CUMMINS

    $635.24
    $580.29
    Engineered for Excellence: Precision-crafted to maintain cylinder integrity and engine efficiency. Durability that Endures: Designed to withstand demanding operational conditions and extend engine...
    $635.24
    $580.29
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $635.24
    $580.29
    Subtotal:
  • CUMMINS 5291831 - THREADED PLUG - Original OEM part - Image 1
    Add to Cart

    CUMMINS 5291831 THREADED PLUG Original OEM part

    CUMMINS

    $12.34
    $11.27
    Engineered for Absolute Integrity and Performance Precision-Machined for Perfect Compatibility Designed to Withstand Extreme Conditions Authentic Cummins OEM Part for Guaranteed Quality CUMMINS...
    $12.34
    $11.27
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $12.34
    $11.27
    Subtotal:
  • CUMMINS 5290511 - ZINC ELECTRODE PLUG - Original OEM part - Image 1
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    CUMMINS 5290511 ZINC ELECTRODE PLUG Original OEM part

    CUMMINS

    $72.29
    $66.04
    Engineered for longevity and peak corrosion resistance Ensures superior protection against galvanic corrosion in Cummins generators Precisely manufactured as a genuine OEM Cummins component for...
    $72.29
    $66.04
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $72.29
    $66.04
    Subtotal:
  • CUMMINS 5289535 - PIPE PLUG - Original OEM part - Image 1
    Add to Cart

    CUMMINS 5289535 PIPE PLUG Original OEM part

    CUMMINS

    $91.07
    $83.19
    Engineered precision meets enduring reliability. Seals critical engine ports to prevent leaks and maintain optimal pressure. Manufactured to exact Cummins specifications ensuring seamless...
    $91.07
    $83.19
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $91.07
    $83.19
    Subtotal:
  • CUMMINS 5284749 - THREADED PLUG - Original OEM part - Image 1
    Add to Cart

    CUMMINS 5284749 THREADED PLUG Original OEM part

    CUMMINS

    $57.02
    $52.08
    Cummins 5284749 - THREADED PLUG MINS5284749 Find the perfect fit for your lawn mower with the Cummins 5284749 - THREADED PLUG, ideal for replacing worn-out parts. With our store, you can trust that...
    $57.02
    $52.08
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $57.02
    $52.08
    Subtotal:
  • CUMMINS 5284227 - THREADED PLUG - Original OEM part - Image 1
    Add to Cart

    CUMMINS 5284227 THREADED PLUG Original OEM part

    CUMMINS

    $22.76
    $20.79
    Precision engineered for seamless integration Durable construction resists wear and protects critical engine components 100% genuine OEM part ensuring full compatibility and compliance Elevate Your...
    $22.76
    $20.79
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $22.76
    $20.79
    Subtotal:
  • CUMMINS 5284000 - PLUG THREADED
    Add to Cart

    CUMMINS 5284000 THREADED PLUG Original OEM part

    CUMMINS

    $48.13
    $43.96
    Cummins 5284000 - THREADED PLUG MINS5284000 Unleash the power of your outdoor equipment with the authentic 5284000 - THREADED PLUG from Cummins. Ensure optimal performance and durability with this...
    $48.13
    $43.96
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $48.13
    $43.96
    Subtotal:
  • CUMMINS 5273979 - THREADED PLUG - Original OEM part - Image 1
    Add to Cart

    CUMMINS 5273979 THREADED PLUG Original OEM part

    CUMMINS

    $6.19
    $5.66
    Engineered for Precision: Experience the unmatched fit and durability unique to Cummins OEM components. Sealing Integrity: Designed to prevent leaks and maintain optimal system pressure under...
    $6.19
    $5.66
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $6.19
    $5.66
    Subtotal:
  • CUMMINS 5267095 - THREADED PLUG - Original OEM part
    Add to Cart

    CUMMINS 5267095 THREADED PLUG Original OEM part

    CUMMINS

    $9.20
    $8.41
    Reliability engineered to empower your Cummins engine’s peak performance Precision threading ensures a secure, leak-free seal High-grade material construction resists wear and corrosion 100% genuine...
    $9.20
    $8.41
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $9.20
    $8.41
    Subtotal:
  • CUMMINS 5265739 - THREADED PLUG - Original OEM part - Image 1
    Add to Cart

    CUMMINS 5265739 THREADED PLUG Original OEM part

    CUMMINS

    $7.32
    $6.68
    Cummins 5265739 - THREADED PLUG MINS5265739 Find the authentic Cummins 5265739 - THREADED PLUG at our store, ensuring top-notch quality and a perfect fit for your outdoor equipment. Trust in our...
    $7.32
    $6.68
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $7.32
    $6.68
    Subtotal:
  • CUMMINS 5263672 - PLUG EXPANSION -image1
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    CUMMINS 5263672 EXPANSION PLUG Original OEM part

    CUMMINS

    $12.95
    $11.83
    Engineered for Endurance: Precision-crafted to uphold Cummins' high standards in performance and durability. Seamless Compatibility: Guaranteed fit for consistent engine integrity and optimal...
    $12.95
    $11.83
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $12.95
    $11.83
    Subtotal:
  • CUMMINS 5261993 - PIPE PLUG - Original OEM part - Image 1
    Add to Cart

    CUMMINS 5261993 PIPE PLUG Original OEM part

    CUMMINS

    $97.63
    $89.18
    Precision sealing for optimized engine performance Engineered to withstand high pressure and temperature extremes Authentic Cummins OEM component guaranteeing perfect fit and reliability CUMMINS...
    $97.63
    $89.18
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $97.63
    $89.18
    Subtotal:
  • CUMMINS 5259561 - THREADED PLUG - Original OEM part - Image 1
    Add to Cart

    CUMMINS 5259561 THREADED PLUG Original OEM part

    CUMMINS

    $8.10
    $7.40
    Engineered for lasting reliability and precision fit Essential component for optimal engine sealing and protection 100% genuine OEM part from Cummins ensuring uncompromised quality CUMMINS 5259561...
    $8.10
    $7.40
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $8.10
    $7.40
    Subtotal:
  • CUMMINS 5254851 - ORING PLUG - Original OEM part - Image 1
    Add to Cart

    CUMMINS 5254851 ORING PLUG Original OEM part

    CUMMINS

    $9.93
    $9.07
    Engineered for enduring sealing performance under high-pressure conditions Precision-crafted from premium materials to prevent leaks and maintain system efficiency Manufactured as a genuine OEM part...
    $9.93
    $9.07
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $9.93
    $9.07
    Subtotal:
  • ONAN 505-1050-01 - 505105001 SQ HD PIPE PLUG Original ONAN/CUMMINS OEM part - Original OEM part - Image 1
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    ONAN 505105001 SQ HD PIPE PLUG Original ONAN/CUMMINS OEM part

    ONAN

    $220.10
    $201.07
    Cummins SQ HD PIPE PLUG 505-1050-01 Discover the genuine Cummins SQ HD PIPE PLUG with SKU 505-1050-01 at our store. Crafted with precision, this high-quality replacement part ensures optimal...
    $220.10
    $201.07
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $220.10
    $201.07
    Subtotal:
  • ONAN 50268 - 1/8 IN BSP BLANKING PLUG Original ONAN/CUMMINS OEM part - Original OEM part - Image 1
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    ONAN 50268 1/8 IN BSP BLANKING PLUG Original ONAN/CUMMINS OEM part

    ONAN

    $4.39
    $4.01
    Engineered for flawless integration and enduring protection Precision sealing capability to prevent leaks and safeguard system integrity Durable OEM construction tailored specifically for ONAN power...
    $4.39
    $4.01
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $4.39
    $4.01
    Subtotal:
  • CUMMINS 501390 - THREADED PLUG - Original OEM part - Image 1
    Add to Cart

    CUMMINS 501390 THREADED PLUG Original OEM part

    CUMMINS

    $37.89
    $34.62
    Engineered to perfection for uncompromising reliability Precision-thread design ensures leak-proof operation under demanding conditions Robust material composition guarantees long service life and...
    $37.89
    $34.62
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $37.89
    $34.62
    Subtotal:
  • CUMMINS 4992508 - THREADED PLUG - Original OEM part
    Add to Cart

    CUMMINS 4992508 THREADED PLUG Original OEM part

    CUMMINS

    $33.28
    $30.40
    Engineered to safeguard your power investment with uncompromising precision. Durable, corrosion-resistant design prevents leaks and maintains system integrity under pressure. Precision threading...
    $33.28
    $30.40
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $33.28
    $30.40
    Subtotal:
  • CUMMINS 4990975 - THREADED PLUG - Original OEM part - Image 1
    Add to Cart

    CUMMINS 4990975 THREADED PLUG Original OEM part

    CUMMINS

    $143.65
    $131.22
    Precision engineered for unmatched sealing performance Durable design to withstand harsh operating conditions 100% genuine OEM CUMMINS part for guaranteed compatibility and reliability CUMMINS...
    $143.65
    $131.22
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $143.65
    $131.22
    Subtotal:
  • CUMMINS 4989843 - EXPANSION PLUG - Original OEM part - Image 1
    Add to Cart

    CUMMINS 4989843 EXPANSION PLUG Original OEM part

    CUMMINS

    $10.07
    $9.20
    Engineered for excellence, built to last — trust in Cummins integrity. Precision sealing technology designed to safeguard engine components from leaks and contamination. Durable corrosion-resistant...
    $10.07
    $9.20
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $10.07
    $9.20
    Subtotal:
  • CUMMINS 4982956 - PIPE PLUG - Original OEM part - Image 1
    Add to Cart

    CUMMINS 4982956 PIPE PLUG Original OEM part

    CUMMINS

    $12.65
    $11.56
    Precision engineered to protect, perform, and preserve your power system integrity. Robust material construction ensures outstanding resistance to wear and environmental stress. Exact fit guarantees...
    $12.65
    $11.56
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $12.65
    $11.56
    Subtotal:
  • CUMMINS 4982843 - PIPE PLUG - Original OEM part - Image 1
    Add to Cart

    CUMMINS 4982843 PIPE PLUG Original OEM part

    CUMMINS

    $7.97
    $7.28
    Engineered Precision for Long-Lasting Integrity Corrosion-Resistant Design for Harsh Operating Conditions 100% OEM Part from Cummins Ensuring Full Compatibility CUMMINS 4982843 PIPE PLUG—Empower...
    $7.97
    $7.28
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $7.97
    $7.28
    Subtotal:
  • CUMMINS 4982624 - EXPANSION PLUG - Original OEM part - Image 1
    Add to Cart

    CUMMINS 4982624 EXPANSION PLUG Original OEM part

    CUMMINS

    $4.95
    $4.52
    Precision engineered to maintain engine integrity and prevent leaks under high pressure. Designed for optimal durability to support prolonged engine lifespan and reduce maintenance frequency...
    $4.95
    $4.52
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $4.95
    $4.52
    Subtotal:
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