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Engine Fastener Kits

Engine Fastener Kits

Engine Fastener Kits

Circle Track Engine Fastener Kits at JJ Motorsports

Engine fasteners are precision-crafted to securely connect vital engine parts, like camshafts and carburetors, for peak performance under pressure. These durable options are indispensable for maintaining a powerful and reliable engine setup alongside other durable fastener solutions.

Shop trusted brands like Allstar Performance, Wehrs Machine, MSD Ignition, Moroso, Chevrolet Performance, Dart, Comp Cams. Explore related categories such as Exhaust Manifold/Header Fastener Kits, Rocker Arm Fastener Kits, Valve Cover Fastener Kits, Cylinder Head Fastener Kits, Carburetor Fastener Kits.

Top Circle Track Engine Fastener Kits

Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • rocker arm stud kit gm ls7/lt 4587-kit

    Comp Cams Rocker Arm Stud Kit GM LS7/LT 4587-KIT

    COMP CAMS

    $120.95
    Rocker arm studs are critical fasteners that anchor your valvetrain under extreme loads—worn or inadequate studs can lead to valvetrain failure and catastrophic engine damage. The Comp Cams 4587-KIT delivers OEM-spec replacements with precision machining...
    COM4587-KIT
    SKU:
    COM4587-KIT
    Availability:
    Ships Same Business Day
    Weight:
    2.00 LBS
    $120.95
    Qty in Cart: 0
    Quantity:
    Price:
    $120.95
    Subtotal:
  • rocker arm stud kit gm ls1/ls3 4582-kit

    Comp Cams Rocker Arm Stud Kit GM LS1/LS3 4582-KIT

    COMP CAMS

    $112.95
    Rocker arm studs are critical fasteners that anchor your valvetrain under extreme loads—worn or inadequate studs can lead to valve float, timing issues, and catastrophic engine failure. This Comp Cams kit delivers OEM-spec durability with a complete...
    COM4582-KIT
    SKU:
    COM4582-KIT
    Availability:
    Ships Same Business Day
    Weight:
    2.00 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $112.95
    Subtotal:
  • valve cover bolt kit 6pt gm ls1/ls2 400-7529

    ARP Valve Cover Bolt Kit 6pt GM LS1/LS2 400-7529

    ARP

    $64.99
    Valve cover bolts are a critical fastener that endure constant thermal cycling and vibration in high-performance engines—stock hardware often loosens or corrodes, leading to oil seepage and potential engine bay contamination. ARP's 6-point bolt kit...
    ARP400-7529
    SKU:
    ARP400-7529
    Availability:
    Ships Same Business Day
    Weight:
    0.57 LBS
    $64.99
    Qty in Cart: 0
    Quantity:
    Price:
    $64.99
    Subtotal:
  • carb stud kit - ss 6pt 5/16 x 1.700/2.050 300-2424

    ARP Carb Stud Kit - SS 6pt 5/16 x 1.700/2.050 300-2424

    ARP

    $26.99
    A carburetor's structural integrity directly impacts engine performance and reliability—substandard fasteners can loosen under vibration, causing air leaks and erratic fuel delivery. ARP's stainless steel stud kit eliminates this weakness with...
    ARP300-2424
    SKU:
    ARP300-2424
    Availability:
    Ships Same Business Day
    Weight:
    0.23 LBS
    $26.99
    Qty in Cart: 0
    Quantity:
    Price:
    $26.99
    Subtotal:
  • head stud kit - ca625+ pro-series gm ls 04-up 234-4314

    ARP Head Stud Kit - CA625+ Pro-Series GM LS 04-Up 234-4314

    ARP

    $909.99
    Factory head bolts flex under boost and sustained high RPM, risking catastrophic head gasket failure and cylinder leakage. ARP's CA625+ Pro-Series studs eliminate deflection with superior clamping force, ensuring your LS engine maintains peak compression...
    ARP234-4314
    SKU:
    ARP234-4314
    Availability:
    Ships Same Business Day
    Weight:
    5.75 LBS
    $909.99
    Qty in Cart: 0
    Quantity:
    Price:
    $909.99
    Subtotal:
  • head stud kit - ca625+ pro-series gm ls 97-03 234-4313

    ARP Head Stud Kit - CA625+ Pro-Series GM LS 97-03 234-4313

    ARP

    $1,022.99
    Head studs are the critical foundation of engine reliability under high boost, nitrous, or sustained high-RPM operation—factory bolts simply cannot handle the clamping force demands of a built LS engine. The ARP CA625+ Pro-Series delivers superior clamp...
    ARP234-4313
    SKU:
    ARP234-4313
    Availability:
    Ships Same Business Day
    Weight:
    7.14 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $1,022.99
    Subtotal:
  • head bolt kit - 12pt gm lsa 234-3726

    ARP Head Bolt Kit - 12pt GM LSA 234-3726

    ARP

    $163.99
    Cylinder head bolts are critical fasteners that directly impact engine reliability and performance—especially under high boost or RPM conditions where standard bolts can fail catastrophically. The ARP Pro Series 12pt kit uses aerospace-grade chromoly...
    ARP234-3726
    SKU:
    ARP234-3726
    Availability:
    Ships Same Business Day
    Weight:
    4.55 LBS
    $163.99
    Qty in Cart: 0
    Quantity:
    Price:
    $163.99
    Subtotal:
  • head bolt kit 12pt - gm ls gen iii 2004 & later 234-3725

    ARP Head Bolt Kit 12pt - GM LS Gen III 2004 & Later 234-3725

    ARP

    $169.99
    Head bolt failure under high boost or sustained RPM can cost you an engine—and a race. ARP's Pro Series chromoly studs are engineered to withstand extreme clamping loads that factory fasteners simply cannot handle, giving you the reliability needed for...
    ARP234-3725
    SKU:
    ARP234-3725
    Availability:
    Ships Same Business Day
    Weight:
    4.55 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $169.99
    Subtotal:
  • carb stud kit - use w/ 1in carb spacer 200-2420

    ARP Carb Stud Kit - use w/ 1in Carb Spacer 200-2420

    ARP

    $23.99
    When you're running a carburetor with a 1-inch spacer, factory fasteners simply won't cut it. ARP's chromoly studs are engineered to withstand the additional clamping loads and vibration that spacer setups create, eliminating the risk of stud failure...
    ARP200-2420
    SKU:
    ARP200-2420
    Availability:
    Ships Same Business Day
    Weight:
    0.36 LBS
    $23.99
    Qty in Cart: 0
    Quantity:
    Price:
    $23.99
    Subtotal:
  • air cleaner stud kit 5/16 x 3.200 200-0303

    ARP Air Cleaner Stud Kit 5/16 x 3.200 200-0303

    ARP

    $5.99
    Air cleaner assemblies endure constant vibration and thermal cycling—stock fasteners fail prematurely, compromising seal integrity and performance. ARP's 4130 chromoly studs eliminate fastener stretch and loosening, ensuring your intake system remains...
    ARP200-0303
    SKU:
    ARP200-0303
    Availability:
    Ships Same Business Day
    Weight:
    0.09 LBS
    $5.99
    Qty in Cart: 0
    Quantity:
    Price:
    $5.99
    Subtotal:
  • head bolt kit - 12pt gm lsa 134-3713

    ARP Head Bolt Kit - 12pt GM LSA 134-3713

    ARP

    $146.99
    Head bolt failure is one of the most catastrophic and costly engine failures you can experience—and it's entirely preventable with the right fasteners. ARP's 12-point chromoly head bolt kit delivers the clamping force and reliability required for...
    ARP134-3713
    SKU:
    ARP134-3713
    Availability:
    Ships Same Business Day
    Weight:
    4.50 LBS
    $146.99
    Qty in Cart: 0
    Quantity:
    Price:
    $146.99
    Subtotal:
  • head bolt kit - 12pt gm ls 04 & later 134-3710

    ARP Head Bolt Kit - 12pt GM LS 04 & Later 134-3710

    ARP

    $145.99
    Head bolts are critical fasteners that clamp your cylinder head to the block under extreme pressure and temperature cycles. OEM bolts often stretch or fail under high-boost applications, while ARP's chromoly construction maintains clamping force...
    ARP134-3710
    SKU:
    ARP134-3710
    Availability:
    Ships Same Business Day
    Weight:
    4.75 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $145.99
    Subtotal:
  • head bolt kit - 12pt - gm ls 97-03 134-3709

    ARP Head Bolt Kit - 12pt - GM LS 97-03 134-3709

    ARP

    $221.99
    Head bolt failure under boost or high RPM is catastrophic—and OEM fasteners simply aren't engineered for sustained performance demands. ARP's chromoly studs provide superior clamping force and fatigue resistance, ensuring your LS cylinder head stays...
    ARP134-3709
    SKU:
    ARP134-3709
    Availability:
    Ships Same Business Day
    Weight:
    6.00 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $221.99
    Subtotal:
  • sbc 6pt short w/p bolt kit 134-3204

    ARP SBC 6pt Short W/P Bolt Kit 134-3204

    ARP

    $14.99
    A quality water pump bolt kit is critical for maintaining a reliable cooling system, especially in high-performance small-block Chevy engines where vibration and heat cycles demand precision fastening. ARP's 134-3204 delivers the strength and consistency...
    ARP134-3204
    SKU:
    ARP134-3204
    Availability:
    Ships Same Business Day
    Weight:
    0.42 LBS
    $14.99
    Qty in Cart: 0
    Quantity:
    Price:
    $14.99
    Subtotal:
  • sbc 12pt short w/p bolt kit 134-3203

    ARP SBC 12pt Short W/P Bolt Kit 134-3203

    ARP

    $19.99
    A quality water pump bolt kit is essential for any serious small block Chevy build—factory fasteners simply don't cut it when you're running higher coolant pressures or elevated engine temperatures. ARP's chromoly construction delivers superior tensile...
    ARP134-3203
    SKU:
    ARP134-3203
    Availability:
    Ships Same Business Day
    Weight:
    0.42 LBS
    $19.99
    Qty in Cart: 0
    Quantity:
    Price:
    $19.99
    Subtotal:
  • thermostat housing bolt kit 12pt chevy v8 79-90 130-7401

    ARP Thermostat Housing Bolt Kit 12pt Chevy V8 79-90 130-7401

    ARP

    $7.99
    OEM thermostat housing bolts are prone to corrosion and thread stripping, especially in older Chevy engines where cooling system reliability is critical. ARP's 12-point fasteners offer superior clamping force and corrosion resistance—essential when...
    ARP130-7401
    SKU:
    ARP130-7401
    Availability:
    Ships Same Business Day
    Weight:
    0.19 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $7.99
    Subtotal:
  • valve cover bolt kit gm ls1/ls2 6pt 100-7524

    ARP Valve Cover Bolt Kit GM LS1/LS2 6pt 100-7524

    ARP

    $54.99
    OEM valve cover bolts are prone to stripping, corrosion, and inconsistent clamping force—compromising engine seal integrity and creating potential oil leaks. ARP's chromoly fasteners eliminate these failure points with superior tensile strength and...
    ARP100-7524
    SKU:
    ARP100-7524
    Availability:
    Ships Same Business Day
    Weight:
    0.57 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $54.99
    Subtotal:
  • valve cover bolt kit gm ls1/ls2 12pt 100-7523

    ARP Valve Cover Bolt Kit GM LS1/LS2 12pt 100-7523

    ARP

    $54.99
    Factory valve cover bolts are prone to corrosion and thread stripping under heat cycles, compromising your seal integrity and risking oil leaks. ARP's chromoly fasteners with black oxide finish deliver superior strength and corrosion resistance, ensuring...
    ARP100-7523
    SKU:
    ARP100-7523
    Availability:
    Ships Same Business Day
    Weight:
    0.57 LBS
    $54.99
    Qty in Cart: 0
    Quantity:
    Price:
    $54.99
    Subtotal:
  • valve cover bolt kit 6pt 1/4-20 x .812 (8pk) 100-7507

    ARP Valve Cover Bolt Kit 6pt 1/4-20 x .812 (8pk) 100-7507

    ARP

    $11.49
    OEM valve cover bolts corrode, strip, and fail under heat cycles—compromising seal integrity and risking oil leaks. ARP's chromoly fasteners resist galling and thread damage, delivering reliable clamping force cycle after cycle. This 8-pack gives you the...
    ARP100-7507
    SKU:
    ARP100-7507
    Availability:
    Ships Same Business Day
    Weight:
    0.19 LBS
    $11.49
    Qty in Cart: 0
    Quantity:
    Price:
    $11.49
    Subtotal:
  • valve cover bolt kit - 12pt - stamped steel 100-7502

    ARP Valve Cover Bolt Kit - 12pt - Stamped Steel 100-7502

    ARP

    $19.49
    Valve cover bolts are a critical fastener that's often overlooked—but using the wrong specification can lead to stripped threads, oil leaks, and damaged cylinder heads. The ARP Valve Cover Bolt Kit eliminates these risks with chromoly construction and...
    ARP100-7502
    SKU:
    ARP100-7502
    Availability:
    Ships Same Business Day
    Weight:
    0.26 LBS
    $19.49
    Qty in Cart: 0
    Quantity:
    Price:
    $19.49
    Subtotal:
  • Total: items /

Adding your products to cart

Big Power, Nice Sound!

Picked up a Pro Circuit pipe and silencer for my YZ125 it’s a game changer. The power feels way better and the sound is awesome.

Tyler D. - 06/12

Perfect Fit

First time ordering here and dang y’all knocked it outta the park! The wheels fit my Ranger UTV perfect, and I’ll definitely be back for more 5 stars all day!

Sarah L. - 08/24

Fast Shipping!!

Ordered on a Monday, and it was on my doorstep by Wednesday! Super impressed with how fast the shipping was.

Jason P. - 09/13

Helps keep cool, works great!

Bought the dual pass Allstar radiator for my build, and it’s been solid. Keeps the engine running cool even on the hottest days no complaints here!

Jake M. - 05/21

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