Diesel Engine Lock Nuts

Genuine Diesel Engine Lock Nuts for Onan, Cummins, and Fleetguard Engines

Maintain the integrity and performance of your diesel engines with our authentic Diesel Engine Lock Nuts. Engineered specifically for Onan, Cummins, and Fleetguard power engines, these lock nuts provide reliable vibration resistance and secure fastening to keep your engine components firmly in place.

Secure Your Diesel Engine Components with Genuine Onan, Cummins & Fleetguard Lock Nuts

Our range includes high-quality nylon lock nuts, all-metal lock nuts, and standard lock nuts, designed to meet the rigorous demands of diesel engine applications. Each lock nut ensures optimal durability, corrosion resistance, and secure fitment to enhance engine reliability.

  • Precision Engineering: Crafted for exact fit on Onan, Cummins, and Fleetguard diesel engines.
  • Durability & Strength: Made from premium alloys to resist wear and maintain engine stability.
  • Enhanced Vibration Resistance: Prevents loosening under extreme engine conditions, ensuring safety and performance.

Upgrade your diesel engine maintenance with our genuine lock nuts, designed to provide lasting security and efficiency.

Why Choose Our Diesel Engine Lock Nuts?

Experience exceptional quality and trusted performance with our genuine Onan, Cummins, and Fleetguard lock nuts—engineered for durability, safety, and optimal power engine operation every time.

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • CUMMINS 167299 - LOCK NUT - Original OEM part - Image 1
    Add to Cart

    CUMMINS 167299 LOCK NUT Original OEM part

    CUMMINS

    $25.87
    $23.63
    Precision-Engineered Durability for Enduring Power Ensures Secure Fastening Under High-Stress Conditions Corrosion-Resistant Material for Extended Service Life Authentic OEM Cummins component for...
    $25.87
    $23.63
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $25.87
    $23.63
    Subtotal:
  • CUMMINS 115508 - LOCK NUT - Original OEM part - Image 1
    Add to Cart

    CUMMINS 115508 LOCK NUT Original OEM part

    CUMMINS

    $25.45
    $23.25
    Cummins 115508 - LOCK NUT MINS115508 Whether you're repairing your lawn mower or outdoor equipment, the 115508 - LOCK NUT from Cummins is a crucial component needed for a secure fit. Our store...
    $25.45
    $23.25
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $25.45
    $23.25
    Subtotal:
  • CUMMINS 113051 - LOCK NUT - Original OEM part - Image 1
    Add to Cart

    CUMMINS 113051 LOCK NUT Original OEM part

    CUMMINS

    $44.76
    $40.89
    Engineered to hold your power in place — uncompromising strength for critical connections Precision machined for exact Cummins fitment, ensuring secure and vibration-resistant locking Durable design...
    $44.76
    $40.89
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $44.76
    $40.89
    Subtotal:
  • CUMMINS 108074 - LOCK NUT - Original OEM part - Image 1
    Add to Cart

    CUMMINS 108074 LOCK NUT Original OEM part

    CUMMINS

    $16.52
    $15.09
    Fortify your generator’s integrity with precision-engineered Cummins components Durable locking mechanism designed to withstand intense vibration and heavy-duty use Corrosion-resistant construction...
    $16.52
    $15.09
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $16.52
    $15.09
    Subtotal:
  • ONAN A029C938 - SELF LOCK HEX NUT Original ONAN/CUMMINS OEM part - Original OEM part - Image 1
    Add to Cart

    ONAN A029C938 SELF LOCK HEX NUT Original ONAN/CUMMINS OEM part

    ONAN

    $6.78
    $6.20
    Cummins SELF LOCK HEX NUT A029C938 Discover the reliable SELF LOCK HEX NUT by Cummins, SKU A029C938, ensuring your lawn mower and outdoor equipment remain securely fastened. Our store offers genuine...
    $6.78
    $6.20
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $6.78
    $6.20
    Subtotal:
  • ONAN A035F848 - SELF LOOK HEX NUT Original ONAN/CUMMINS OEM part - Original OEM part - Image 1
    Add to Cart

    ONAN A035F848 SELF LOOK HEX NUT Original ONAN/CUMMINS OEM part

    ONAN

    $10.56
    $9.65
    Cummins SELF LOOK HEX NUT A035F848 Discover the perfect solution for your outdoor equipment maintenance with the SELF LOCK HEX NUT by Cummins, SKU A035F848. Ensure a secure and durable fit with this...
    $10.56
    $9.65
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $10.56
    $9.65
    Subtotal:
  • ONAN 8702056 LOOK FLANGE NUT ONAN Genuine OEM Part
    Add to Cart

    ONAN 8702056 LOOK FLANGE NUT ONAN Genuine OEM Part

    ONAN

    $6.97
    $6.37
    Authentic ONAN Genuine OEM Look Flange Nut designed for precise fit and durability. Ensures secure fastening critical to preventing loosening under vibration and load. Optimizes generator...
    $6.97
    $6.37
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $6.97
    $6.37
    Subtotal:
  • ONAN 870-2055 - 8702055 LOOK FLANGE NUT ONAN Genuine OEM Part - Original OEM part - Image 1
    Add to Cart

    ONAN 8702055 LOOK FLANGE NUT ONAN Genuine OEM Part

    ONAN

    $8.07
    $7.37
    Genuine ONAN OEM part designed to meet strict Cummins quality standards Ensures a secure and reliable fastening for generator components Engineered to resist wear, corrosion, and maintain tight...
    $8.07
    $7.37
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $8.07
    $7.37
    Subtotal:
  • ONAN 870-2054 - 8702054 LOOK FLANGE NUT Original ONAN/CUMMINS OEM part - Original OEM part - Image 1
    Add to Cart

    ONAN 8702054 LOOK FLANGE NUT Original ONAN/CUMMINS OEM part

    ONAN

    $8.09
    $7.39
    Cummins LOOK FLANGE NUT 870-2054 Upgrade your lawn mower's performance with the original "LOOK FLANGE NUT" (SKU: 870-2054) by Cummins. Our store offers this high-quality part at the best price,...
    $8.09
    $7.39
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $8.09
    $7.39
    Subtotal:
  • ONAN 870-0506 - 8700506 LOCK NUT ONAN Genuine OEM Part - Original OEM part - Image 1
    Add to Cart

    ONAN 8700506 LOCK NUT ONAN Genuine OEM Part

    ONAN

    $8.09
    $7.39
    Certified Genuine OEM ONAN part ensuring perfect fit and lasting durability Secures critical components to prevent loosening under vibration and heavy use Essential for maintaining mechanical...
    $8.09
    $7.39
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $8.09
    $7.39
    Subtotal:
  • ONAN 870-0235 - 8700235 SELF LOCK NUT Original ONAN/CUMMINS OEM part - Original OEM part - Image 1
    Add to Cart

    ONAN 8700235 SELF LOCK NUT Original ONAN/CUMMINS OEM part

    ONAN

    $7.30
    $6.67
    Cummins SELF LOCK NUT 870-0235 Discover the Cummins 870-0235 SELF LOCK NUT, ensuring a secure fit for your lawn mower or outdoor equipment. Our store offers original replacement parts, guaranteeing...
    $7.30
    $6.67
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $7.30
    $6.67
    Subtotal:
  • ONAN 870-0212 - 8700212 1/4 20 LOOK NUT Original ONAN/CUMMINS OEM part - Original OEM part - Image 1
    Add to Cart

    ONAN 8700212 1/4 20 LOOK NUT Original ONAN/CUMMINS OEM part

    ONAN

    $7.54
    $6.89
    Precision engineered to uphold ONAN's legacy of excellence Durable design ensuring long-lasting mechanical integrity Essential component for reliable generator operation Manufactured as a genuine...
    $7.54
    $6.89
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $7.54
    $6.89
    Subtotal:
  • ONAN 518-0313 - 5180313 NUT LOCK COMPOUND Original ONAN/CUMMINS OEM part PACK OF 10 - Original OEM part - Image 1
    Add to Cart

    ONAN 5180313 NUT LOCK COMPOUND Original ONAN/CUMMINS OEM part PACK OF 10

    ONAN

    $73.62
    $67.25
    Cummins NUT LOCK COMPOUND 518-0313 Discover the genuine Cummins NUT LOCK COMPOUND (SKU: 518-0313) at our online store, where quality meets affordability. Our store stands out as the top choice for...
    $73.62
    $67.25
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $73.62
    $67.25
    Subtotal:
  • ONAN 870-0513-02 - 870051302 HEX FLANGE LOCK NUT Original ONAN/CUMMINS OEM part - Original OEM part - Image 1
    Add to Cart

    ONAN 870051302 HEX FLANGE LOCK NUT Original ONAN/CUMMINS OEM part

    ONAN

    $6.88
    $6.29
    Engineered for precision and resilience to safeguard your power system’s integrity Durable hex flange design ensures superior vibration resistance for sustained operation Genuine OEM part from ONAN,...
    $6.88
    $6.29
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $6.88
    $6.29
    Subtotal:
  • ONAN 870-2281 - 8702281 LOCK NUT Original ONAN/CUMMINS OEM part - Original OEM part - Image 1
    Add to Cart

    ONAN 8702281 LOCK NUT Original ONAN/CUMMINS OEM part

    ONAN

    $6.96
    $6.36
    Cummins LOCK NUT 870-2281 Meet the versatile LOCK NUT model 870-2281 by Cummins, an essential part designed for durability and precision. Our store stands out as your top choice for authentic...
    $6.96
    $6.36
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $6.96
    $6.36
    Subtotal:
  • ONAN 870-2203 - 8702203 HEX FLANGE LOCK NUT Original ONAN/CUMMINS OEM part - Original OEM part - Image 1
    Add to Cart

    ONAN 8702203 HEX FLANGE LOCK NUT Original ONAN/CUMMINS OEM part

    ONAN

    $7.44
    $6.80
    Precision engineered for unwavering strength and dependable locking performance. Features a hex flange design that optimizes torque distribution preventing loosening under vibration...
    $7.44
    $6.80
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $7.44
    $6.80
    Subtotal:
  • ONAN 870-2062 - 8702062 DIN 985 M5 NYLOC NUT Original ONAN/CUMMINS OEM part - Original OEM part - Image 1
    Add to Cart

    ONAN 8702062 DIN 985 M5 NYLOC NUT Original ONAN/CUMMINS OEM part

    ONAN

    $10.85
    $9.91
    Precision-Engineered Security: Delivering unmatched fastening reliability for steady, vibration-resistant operation. Long-Lasting Durability: Crafted to withstand harsh conditions ensuring extended...
    $10.85
    $9.91
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $10.85
    $9.91
    Subtotal:
  • ONAN 870-0499 - 8700499 NYLON LOCK NUT Original ONAN/CUMMINS OEM part - Original OEM part - Image 1
    Add to Cart

    ONAN 8700499 NYLON LOCK NUT Original ONAN/CUMMINS OEM part

    ONAN

    $9.97
    $9.11
    Cummins NYLON LOCK NUT 870-0499 Find peace of mind with the original Cummins NYLON LOCK NUT, SKU 870-0499, ensuring a secure fit for your outdoor equipment. Our store stands out as the top choice...
    $9.97
    $9.11
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $9.97
    $9.11
    Subtotal:
  • ONAN 870-0453 - 8700453 3/8 LOCK HEX NUT Original ONAN/CUMMINS OEM part - Original OEM part - Image 1
    Add to Cart

    ONAN 8700453 3/8 LOCK HEX NUT Original ONAN/CUMMINS OEM part

    ONAN

    $8.99
    $8.22
    Cummins 3/8 LOCK HEX NUT 870-0453 Discover the authentic Cummins 3/8 LOCK HEX NUT (SKU: 870-0453) at our store, your go-to destination for top-quality replacement parts. Our commitment to providing...
    $8.99
    $8.22
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $8.99
    $8.22
    Subtotal:
  • ONAN 870-0437 - 8700437 NUT LOCKING HEXAGONAL Original ONAN/CUMMINS OEM part - Original OEM part - Image 1
    Add to Cart

    ONAN 8700437 NUT LOCKING HEXAGONAL Original ONAN/CUMMINS OEM part

    ONAN

    $8.15
    $7.44
    Cummins NUT LOCKING HEXAGONAL 870-0437 Find the authentic "NUT LOCKING HEXAGONAL" replacement part with SKU "870-0437" from the trusted brand Cummins in our online store. Ensure the quality and...
    $8.15
    $7.44
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $8.15
    $7.44
    Subtotal:
  • ONAN 870-0352 - 8700352 CROWN LOCK NUT Original ONAN/CUMMINS OEM part - Original OEM part - Image 1
    Add to Cart

    ONAN 8700352 CROWN LOCK NUT Original ONAN/CUMMINS OEM part

    ONAN

    $7.07
    $6.46
    Unyielding Strength for Demanding Conditions Precision-Engineered Locking Design for Vibration Resistance Certified Genuine OEM Part from ONAN to Guarantee Compatibility ONAN 870-0352 CROWN LOCK...
    $7.07
    $6.46
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $7.07
    $6.46
    Subtotal:
  • ONAN 870-0188 - 8700188 LOCK NUT Original ONAN/CUMMINS OEM part - Original OEM part - Image 1
    Add to Cart

    ONAN 8700188 LOCK NUT Original ONAN/CUMMINS OEM part

    ONAN

    $10.03
    $9.16
    Cummins LOCK NUT 870-0188 Finding the authentic Cummins LOCK NUT with SKU 870-0188 just got easier. Our store is your go-to destination for genuine replacement parts. Engineered for performance and...
    $10.03
    $9.16
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $10.03
    $9.16
    Subtotal:
  • ONAN 870-0137 - 8700137 FLEX LOCK NUT Original ONAN/CUMMINS OEM part - Original OEM part - Image 1
    Add to Cart

    ONAN 8700137 FLEX LOCK NUT Original ONAN/CUMMINS OEM part

    ONAN

    $7.10
    $6.49
    Precision engineered for peace of mind Durable flex lock design prevents loosening under vibration Ensures secure fastening critical to generator integrity 100% OEM Cummins Onan quality, built for...
    $7.10
    $6.49
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $7.10
    $6.49
    Subtotal:
  • ONAN 8700130 LOCK NUT Original ONAN/CUMMINS OEM part
    Add to Cart

    ONAN 8700130 LOCK NUT Original ONAN/CUMMINS OEM part

    ONAN

    $7.60
    $6.95
    Cummins LOCK NUT 870-0130 Discover the top-quality LOCK NUT by Cummins with SKU 870-0130, exclusively available at our store. Our commitment to providing genuine replacement parts sets us apart,...
    $7.60
    $6.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $7.60
    $6.95
    Subtotal:
  • ONAN 331-0555 - 3310555 CONNECTOR LOCK NUT Original ONAN/CUMMINS OEM part - Original OEM part - Image 1
    Add to Cart

    ONAN 3310555 CONNECTOR LOCK NUT Original ONAN/CUMMINS OEM part

    ONAN

    $9.97
    $9.11
    Precision engineered for secure connectivity: ensuring your generator operates smoothly under all conditions. Durable construction for long-lasting performance: built to withstand operational...
    $9.97
    $9.11
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $9.97
    $9.11
    Subtotal:
  • ONAN A034N956 - LOCK NUT Original ONAN/CUMMINS OEM part - Original OEM part - Image 1
    Add to Cart

    ONAN A034N956 LOCK NUT Original ONAN/CUMMINS OEM part

    ONAN

    $6.94
    $6.34
    Cummins LOCK NUT A034N956 Discover the genuine Cummins LOCK NUT, SKU A034N956, crafted to perfection for your outdoor equipment needs. Our store prides itself on ensuring top-notch quality and...
    $6.94
    $6.34
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $6.94
    $6.34
    Subtotal:
  • ONAN A028X680 - LOCK NUT Original ONAN/CUMMINS OEM part - Original OEM part - Image 1
    Add to Cart

    ONAN A028X680 LOCK NUT Original ONAN/CUMMINS OEM part

    ONAN

    $7.37
    $6.73
    Cummins LOCK NUT A028X680 Find the genuine Cummins LOCK NUT, SKU A028X680, at our online store. Ensure your outdoor equipment's peak performance by using original replacement parts. Our store stands...
    $7.37
    $6.73
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $7.37
    $6.73
    Subtotal:
  • ONAN 870-2311 - 8702311 COMBY LOCK NUT Original ONAN/CUMMINS OEM part - Original OEM part - Image 1
    Add to Cart

    ONAN 8702311 COMBY LOCK NUT Original ONAN/CUMMINS OEM part

    ONAN

    $8.85
    $8.08
    Strengthen your generator's core with precision-engineered OEM excellence Designed to deliver optimal locking performance under critical vibration conditions Constructed with durable materials to...
    $8.85
    $8.08
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $8.85
    $8.08
    Subtotal:
  • ONAN 870-2248-07 - 870224807 LOCK NUT Original ONAN/CUMMINS OEM part - Original OEM part - Image 1
    Add to Cart

    ONAN 870224807 LOCK NUT Original ONAN/CUMMINS OEM part

    ONAN

    $5.79
    $5.29
    Cummins LOCK NUT 870-2248-07 Find the genuine Cummins LOCK NUT (SKU: 870-2248-07) you need right here. Our store is your top choice for high-quality replacement parts. Trust in the Cummins brand for...
    $5.79
    $5.29
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $5.79
    $5.29
    Subtotal:
  • ONAN 870-2248-05 - 870224805 LOCK NUT Original ONAN/CUMMINS OEM part - Original OEM part - Image 1
    Add to Cart

    ONAN 870224805 LOCK NUT Original ONAN/CUMMINS OEM part

    ONAN

    $0.87
    $0.80
    Cummins LOCK NUT 870-2248-05 When it comes to finding the right replacement parts for outdoor equipment, look no further than our store for the original LOCK NUT by Cummins with SKU 870-2248-05. Our...
    $0.87
    $0.80
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $0.87
    $0.80
    Subtotal:
  • Total: items /

Adding your products to cart