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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
  • Air Filter Nut 5/16-18 Aluminum Anodized Red IMCA Modifieds Late Models Air Filter Nut 5/16-18 Aluminum Anodized Red IMCA Modifieds Late Models

    Air Filter Nut 5/16-18 Aluminum Anodized Red IMCA Modifieds Late Models

    J J MOTORSPORTS

    $12.95
    Air filter stud nut for 5/16 studs (4bbl)  Red Aluminum 
    RCFL-0012
    SKU:
    RCFL-0012
    Availability:
    Ships Same Business Day
    Weight:
    0.30 LBS
    $12.95
    Qty in Cart: 0
    Quantity:
    Price:
    $12.95
    Subtotal:
  • Air Filter Nut 5/16-18 Aluminum Anodized Black IMCA Modifieds Late Models Air Filter Nut 5/16-18 Aluminum Anodized Black IMCA Modifieds Late Models

    Air Filter Nut 5/16-18 Aluminum Anodized Black IMCA Modifieds Late Models

    J J MOTORSPORTS

    $12.95
    Air filter stud nut for 5/16 studs (4bbl)  Black Aluminum 
    RCFL-0011
    SKU:
    RCFL-0011
    Availability:
    Ships Same Business Day
    Weight:
    0.30 LBS
    $12.95
    Qty in Cart: 0
    Quantity:
    Price:
    $12.95
    Subtotal:
  • Offset Stud 5/16-18  ALL26053

    Allstar Performance Offset Stud 5/16-18 ALL26053

    ALLSTAR PERFORMANCE

    $7.99
    Air Cleaner StudOffset5/16-18 in Thread6 in LongSteelZinc OxideEach
    ALL26053
    SKU:
    ALL26053
    Availability:
    Ships Same Business Day
    Weight:
    0.22 LBS
    $7.99
    Qty in Cart: 0
    Quantity:
    Price:
    $7.99
    Subtotal:
  • On Sale
    Air Cleaner Nut 5/16in Thread WEHWM273125

    Wehrs Air Cleaner Nut 5/16in Thread WEHWM273125

    WEHRS MACHINE

    MSRP: $15.99
    Now: $15.00
    Was: $15.99
    Air Cleaner NutThumb Screw5/16-18 in ThreadO-RingAluminumBlack AnodizedEach
    WEHWM273125
    SKU:
    WEHWM273125
    Availability:
    Ships Same Business Day
    Weight:
    0.06 LBS
    MFG Part #:
    WM273125
    MSRP: $15.99
    Now: $15.00
    Was: $15.99
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $15.99
    Now: $15.00
    Was: $15.99
    Subtotal:
  • On Sale
    Air Cleaner Nut 1/4in Thread WEHWM27250

    Wehrs Air Cleaner Nut 1/4in Thread WEHWM27250

    WEHRS MACHINE

    MSRP: $15.99
    Now: $14.00
    Was: $15.99
    Air Cleaner NutThumb Screw1/4-20 in ThreadO-RingAluminumBlack AnodizedEach
    WEHWM27250
    SKU:
    WEHWM27250
    Availability:
    Ships Same Business Day
    Weight:
    0.06 LBS
    MFG Part #:
    WM27250
    MSRP: $15.99
    Now: $14.00
    Was: $15.99
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $15.99
    Now: $14.00
    Was: $15.99
    Subtotal:
  • Rocker Arm Stud Kit SBC 8 pcs ALL90230

    Allstar Performance Rocker Arm Stud Kit SBC 8 pcs ALL90230

    ALLSTAR PERFORMANCE

    $12.99
    Rocker Arm Stud Kit SBC 8 pcsRocker Arm Stud7/16-14 in Base Thread3/8-24 in Top Thread2.375 in LongSteelSmall Block ChevySet of 8
    ALL90230
    SKU:
    ALL90230
    Availability:
    Ships Same Business Day
    Weight:
    0.75 LBS
    MFG Part #:
    ALL90230
    $12.99
    Qty in Cart: 0
    Quantity:
    Price:
    $12.99
    Subtotal:
  • Intake Bolt Kit SBC 12PT 12pk ALL87010

    Allstar Performance Intake Bolt Kit SBC 12PT 12pk ALL87010

    ALLSTAR PERFORMANCE

    $18.99
    Intake Bolt Kit SBC 12PT 12pkIntake Manifold Bolt Kit12 Point HeadSteelZinc OxideSmall Block Chevy / Mopar A / B-SeriesSet of 12
    ALL87010
    SKU:
    ALL87010
    Availability:
    Ships Same Business Day
    Weight:
    0.61 LBS
    MFG Part #:
    ALL87010
    $18.99
    Qty in Cart: 0
    Quantity:
    Price:
    $18.99
    Subtotal:
  • Valve Cover Hold Down Nuts 1/4in-20 Thread 4pk ALL26320

    Allstar Performance Valve Cover Hold Down Nuts 1/4in-20 Thread 4pk ALL26320

    ALLSTAR PERFORMANCE

    $34.99
    Valve Cover Hold Down Nuts 1/4in-20 Thread 4pkValve Cover FastenerNuts1/4-20 in Thread1/4 in Socket DriveSteelChromeSet of 4
    ALL26320
    SKU:
    ALL26320
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    MFG Part #:
    ALL26320
    $34.99
    Qty in Cart: 0
    Quantity:
    Price:
    $34.99
    Subtotal:
  • Air Cleaner Stud Straight Steel ALL26055

    Allstar Performance Air Cleaner Stud Straight Steel ALL26055

    ALLSTAR PERFORMANCE

    $16.99
    Air Cleaner Stud Straight SteelAir Cleaner Stud5/16-18 in Thread6.000 in LongChromolyNaturalEach
    ALL26055
    SKU:
    ALL26055
    Availability:
    Ships Same Business Day
    Weight:
    0.21 LBS
    MFG Part #:
    ALL26055
    $16.99
    Qty in Cart: 0
    Quantity:
    Price:
    $16.99
    Subtotal:
  • Air Cleaner Stud Straight Aluminum ALL26054

    Allstar Performance Air Cleaner Stud Straight Aluminum ALL26054

    ALLSTAR PERFORMANCE

    $14.79
    Air Cleaner Stud Straight AluminumAir Cleaner Stud5/16-18 in Thread6.000 in LongAluminumNaturalEach
    ALL26054
    SKU:
    ALL26054
    Availability:
    Ships Same Business Day
    Weight:
    0.20 LBS
    MFG Part #:
    ALL26054
    $14.79
    Qty in Cart: 0
    Quantity:
    Price:
    $14.79
    Subtotal:
  • O-Ring Carb Nut Short 5/16-18 ALL26047

    Allstar Performance O-Ring Carb Nut Short 5/16-18 ALL26047

    ALLSTAR PERFORMANCE

    $10.99
    O-Ring Carb Nut Short 5/16-18Air Cleaner NutShort5/16-18 in ThreadAluminumBlack AnodizedEach
    ALL26047
    SKU:
    ALL26047
    Availability:
    Ships Same Business Day
    Weight:
    0.09 LBS
    MFG Part #:
    ALL26047
    $10.99
    Qty in Cart: 0
    Quantity:
    Price:
    $10.99
    Subtotal:
  • O-Ring Carb Nut Tall 1/4-20 ALL26046

    Allstar Performance O-Ring Carb Nut Tall 1/4-20 ALL26046

    ALLSTAR PERFORMANCE

    $11.99
    O-Ring Carb Nut Tall 1/4-20Air Cleaner NutTall1/4-20 in ThreadAluminumBlack AnodizedEach
    ALL26046
    SKU:
    ALL26046
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    MFG Part #:
    ALL26046
    $11.99
    Qty in Cart: 0
    Quantity:
    Price:
    $11.99
    Subtotal:
  • bolt down kit - ford distributor cap 8499

    MSD Distributor Cap Bolt Down Kit for Ford Style Caps 8499

    MSD IGNITION

    $79.05
    The MSD Bolt Down Kit (Part #8499) is designed to securely fasten MSD Ford-style distributor caps (Part #8408 and #84083) to the distributor base, ensuring a stable and reliable ignition system. This kit is particularly beneficial in high-performance...
    MSD8499
    SKU:
    MSD8499
    Availability:
    Ships Same Business Day
    Weight:
    0.16 LBS
    $79.05
    Qty in Cart: 0
    Quantity:
    Price:
    $79.05
    Subtotal:
  • oil pan bolt kit - sbc 38551

    Moroso Oil Pan Bolt Kit - SBC 38551

    MOROSO

    $22.99
    Oil Pan Bolt KitHex HeadFlangedGrade 8SteelSmall Block ChevyKit
    MOR38551
    SKU:
    MOR38551
    Availability:
    Ships Same Business Day
    Weight:
    0.28 LBS
    $22.99
    Qty in Cart: 0
    Quantity:
    Price:
    $22.99
    Subtotal:
  • cylinder head bolt kit chevy ls engines 17800568

    Chevrolet Performance Cylinder Head Bolt Kit Chevy LS Engines 17800568

    CHEVROLET PERFORMANCE

    $42.20
    Cylinder Head Bolt KitHex HeadSteelNaturalGM LS-Series
    GMP17800568
    SKU:
    GMP17800568
    Availability:
    Ships Same Business Day
    Weight:
    2.05 LBS
    $42.20
    Qty in Cart: 0
    Quantity:
    Price:
    $42.20
    Subtotal:
  • 1/4-20 torx bolt - for cam retainer plate sbc 14093637

    Chevrolet Performance 1/4-20 Torx Bolt - for Cam Retainer Plate SBC 14093637

    CHEVROLET PERFORMANCE

    $2.99
    Cam Retainer Plate Bolt1/4-20 inTorx HeadChromolyBlack Oxide
    GMP14093637
    SKU:
    GMP14093637
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    $2.99
    Qty in Cart: 0
    Quantity:
    Price:
    $2.99
    Subtotal:
  • main cap bolt ls series inner 6-bolt w/tray stud 12560273

    Chevrolet Performance Main Cap Bolt LS Series Inner 6-Bolt w/Tray Stud 12560273

    CHEVROLET PERFORMANCE

    $10.49
    Main BoltHex Head6-Bolt MainsSteelBlack OxideGM LS-SeriesEach
    GMP12560273
    SKU:
    GMP12560273
    Availability:
    Ships Same Business Day
    Weight:
    0.14 LBS
    $10.49
    Qty in Cart: 0
    Quantity:
    Price:
    $10.49
    Subtotal:
  • main cap bolt ls series inner 6-bolt 12560272

    Chevrolet Performance Main Cap Bolt LS Series Inner 6-Bolt 12560272

    CHEVROLET PERFORMANCE

    $7.49
    Main BoltHex Head6-Bolt MainsSteelBlack OxideEach
    GMP12560272
    SKU:
    GMP12560272
    Availability:
    Ships Same Business Day
    Weight:
    0.13 LBS
    $7.49
    Qty in Cart: 0
    Quantity:
    Price:
    $7.49
    Subtotal:
  • cam bolt - ls1/ls2/ls6 & ls7 12556127

    Chevrolet Performance Cam Bolt - LS1/LS2/LS6 & LS7 12556127

    CHEVROLET PERFORMANCE

    $5.59
    Camshaft Retainer Bolt8 mm x 1.25 Thread22.5 mm LengthFlat HeadHexGM LS-SeriesEach
    GMP12556127
    SKU:
    GMP12556127
    Availability:
    Ships Same Business Day
    Weight:
    0.04 LBS
    $5.59
    Qty in Cart: 0
    Quantity:
    Price:
    $5.59
    Subtotal:
  • head stud kit 12pt dart ls next aluminum block 66120028b

    Dart Head Stud Kit 12pt Dart LS Next Aluminum Block 66120028B

    DART

    $791.24
    Cylinder Head Stud Kit12 Point NutsChromolyBlack OxideGM LS-Series
    DRT66120028B
    SKU:
    DRT66120028B
    Availability:
    Ships Same Business Day
    Weight:
    5.50 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $791.24
    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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