Select Your Ride

1
2
3

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
  • Sb Chevy Intake Bolts  MIL85400

    Sb Chevy Intake Bolts 85400

    MILODON

    $15.95
    Sb Chevy Intake Bolts Intake Manifold Bolt KitHex HeadSteelBlack OxideSmall Block ChevyKit
    MIL85400
    SKU:
    MIL85400
    Availability:
    Ships Same Business Day
    Weight:
    0.59 LBS
    MFG Part #:
    85400
    $15.95
    Qty in Cart: 0
    Quantity:
    Price:
    $15.95
    Subtotal:
  • Sb Chevy Oil Pan Bolts  MIL85000

    Sb Chevy Oil Pan Bolts 85000

    MILODON

    $12.95
    Sb Chevy Oil Pan Bolts Oil Pan Bolt KitHex HeadSteelCadmiumSmall Block Chevy / Oldsmobile V8Kit
    MIL85000
    SKU:
    MIL85000
    Availability:
    Ships Same Business Day
    Weight:
    0.38 LBS
    MFG Part #:
    85000
    $12.95
    Qty in Cart: 0
    Quantity:
    Price:
    $12.95
    Subtotal:
  • Crank Bolt - SBC  MIL84530

    Crank Bolt - SBC 84530

    MILODON

    $14.95
    Crank Bolt - SBC Harmonic Balancer Bolt7/16-20 in Thread2.000 in Long3/4 in HeadWasher IncludedGrade 8SteelCadmiumSmall Block ChevyEach
    MIL84530
    SKU:
    MIL84530
    Availability:
    Ships Same Business Day
    Weight:
    0.30 LBS
    MFG Part #:
    84530
    $14.95
    Qty in Cart: 0
    Quantity:
    Price:
    $14.95
    Subtotal:
  • Sb/Bb Chevy Oil Pump Stu  MIL17050

    Sb/Bb Chevy Oil Pump Stu 17050

    MILODON

    $12.95
    Sb/Bb Chevy Oil Pump Stu Oil Pump StudHex NutWasherChromolyBlack OxideChevy V8Kit
    MIL17050
    SKU:
    MIL17050
    Availability:
    Ships Same Business Day
    Weight:
    0.25 LBS
    MFG Part #:
    17050
    $12.95
    Qty in Cart: 0
    Quantity:
    Price:
    $12.95
    Subtotal:
  • SBC Head Bolts (1 Head)  MAN42171

    Manley SBC Head Bolts (1 Head) 42171

    MANLEY

    $38.27
    SBC Head Bolts (1 Head) Cylinder Head Bolt Kit1/2 in BoltHex HeadSteelNaturalSmall Block Chevy1 HeadKit
    MAN42171
    SKU:
    MAN42171
    Availability:
    Ships Same Business Day
    Weight:
    2.30 LBS
    MFG Part #:
    42171
    $38.27
    Qty in Cart: 0
    Quantity:
    Price:
    $38.27
    Subtotal:
  • 7/16in Head Bolt Washers (34) MAN42102

    Manley 7/16in Head Bolt Washers (34) 42102

    MANLEY

    $14.97
    7/16in Head Bolt Washers (34)Head Bolt Washer0.760 in OD7/16 in ID0.125 in ThickSteelHead BoltsChevy V8 / Small Block FordSet of 34
    MAN42102
    SKU:
    MAN42102
    Availability:
    Ships Same Business Day
    Weight:
    0.37 LBS
    MFG Part #:
    42102
    $14.97
    Qty in Cart: 0
    Quantity:
    Price:
    $14.97
    Subtotal:
  • Air Cleaner Stud Kit 1/4in LON52-32752

    Longacre Air Cleaner Stud Kit 1/4in 52-32752

    LONGACRE

    $47.99
    Air Cleaner Stud Kit 1/4inAir Cleaner Stud1/4-20 in Thread7.000 in LongAluminumRed AnodizedKit
    LON52-32752
    SKU:
    LON52-32752
    Availability:
    Ships Same Business Day
    Weight:
    0.20 LBS
    MFG Part #:
    52-32752
    $47.99
    Qty in Cart: 0
    Quantity:
    Price:
    $47.99
    Subtotal:
  • Air Cleaner Stud Kit  LON52-32750

    Longacre Air Cleaner Stud Kit 52-32750

    LONGACRE

    $46.99
    Air Cleaner Stud Kit Air Cleaner Stud5/16-18 in Thread7.000 in LongAluminumRed AnodizedKit
    LON52-32750
    SKU:
    LON52-32750
    Availability:
    Ships Same Business Day
    Weight:
    0.20 LBS
    MFG Part #:
    52-32750
    $46.99
    Qty in Cart: 0
    Quantity:
    Price:
    $46.99
    Subtotal:
  • Bolt w/End Cap 7/16in x 5.0in JRPBEC-2109-C

    Jones Racing Bolt w/End Cap 7/16in x 5.0in BEC-2109-C

    JONES RACING PRODUCTS

    $14.98
    Bolt w/End Cap 7/16in x 5.0inMandrel Drive Bolt7/16 in Bolt5.000 in LongHex HeadStep WasherSteelEach
    JRPBEC-2109-C
    SKU:
    JRPBEC-2109-C
    Availability:
    Ships Same Business Day
    Weight:
    0.27 LBS
    MFG Part #:
    BEC-2109-C
    $14.98
    Qty in Cart: 0
    Quantity:
    Price:
    $14.98
    Subtotal:
  • Aluminum Valve Cover Nut Kit w/Studs 1/4-28 JOE34352

    Joes Aluminum Valve Cover Nut Kit w/Studs 1/4-28 34352

    JOES RACING PRODUCTS

    $32.95
    Aluminum Valve Cover Nut Kit w/Studs 1/4-28Valve Cover FastenerStud1/4-28 in Thread1.500 in LongNuts IncludedAluminumRed AnodizedSet of 4
    JOE34352
    SKU:
    JOE34352
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    MFG Part #:
    34352
    $32.95
    Qty in Cart: 0
    Quantity:
    Price:
    $32.95
    Subtotal:
  • Aluminum Valve Cover Nut Kit w/Studs 1/4-20 JOE34350

    Joes Aluminum Valve Cover Nut Kit w/Studs 1/4-20 34350

    JOES RACING PRODUCTS

    $29.95
    Aluminum Valve Cover Nut Kit w/Studs 1/4-20Valve Cover FastenerStud1/4-20 in Thread1.500 in LongNuts IncludedAluminumBlack AnodizedSet of 4
    JOE34350
    SKU:
    JOE34350
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    MFG Part #:
    34350
    $29.95
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Aluminum Valve Cover Nut Kit w/ Studs 1/4-20 8pk JOE34349

    Joes Aluminum Valve Cover Nut Kit w/ Studs 1/4-20 8pk 34349

    JOES RACING PRODUCTS

    $56.95
    Aluminum Valve Cover Nut Kit w/ Studs 1/4-20 8pkValve Cover FastenerStud1/4-20 in Thread1.500 in LongNuts IncludedAluminumBlack AnodizedSet of 8
    JOE34349
    SKU:
    JOE34349
    Availability:
    Ships Same Business Day
    Weight:
    0.30 LBS
    MFG Part #:
    34349
    $56.95
    Qty in Cart: 0
    Quantity:
    Price:
    $56.95
    Subtotal:
  • Air Cleaner Stud Kit 5/16-18 JOE34306

    Joes Air Cleaner Stud Kit 5/16-18 34306

    JOES RACING PRODUCTS

    $49.95
    Air Cleaner Stud Kit 5/16-18Air Cleaner Stud5/16-18 in Thread8.000 in LongDual Tapered NutsThumb ScrewAluminumRed AnodizedKit
    JOE34306
    SKU:
    JOE34306
    Availability:
    Ships Same Business Day
    Weight:
    0.34 LBS
    MFG Part #:
    34306
    $49.95
    Qty in Cart: 0
    Quantity:
    Price:
    $49.95
    Subtotal:
  • Hardware Kit  HLY34-7

    Holley Hardware Kit 34-7

    HOLLEY

    $11.69
    Hardware Kit Needle and Seat HardwareGasket / Nut / O-Ring / ScrewExternally Adjustable FloatHolley CarburetorsKit
    HLY34-7
    SKU:
    HLY34-7
    Availability:
    Ships Same Business Day
    Weight:
    0.03 LBS
    MFG Part #:
    34-7
    $11.69
    Qty in Cart: 0
    Quantity:
    Price:
    $11.69
    Subtotal:
  • Bolt Kit  Cylinder Head SBC (34pk) GMP12495499

    Chevrolet Performance Bolt Kit Cylinder Head SBC (34pk) 12495499

    CHEVROLET PERFORMANCE

    $60.20
    Bolt Kit Cylinder Head SBC (34pk)Cylinder Head Bolt KitHex HeadSteelBlack Oxide / NaturalSmall Block ChevyKit
    GMP12495499
    SKU:
    GMP12495499
    Availability:
    Ships Same Business Day
    Weight:
    4.20 LBS
    MFG Part #:
    12495499
    $60.20
    Qty in Cart: 0
    Quantity:
    Price:
    $60.20
    Subtotal:
  • Sb Ford 5/16 Rocker Arm Adjusting kit COM4610-16

    Comp Cams Sb Ford 5/16 Rocker Arm Adjusting kit 4610-16

    COMP CAMS

    $54.95
    Sb Ford 5/16 Rocker Arm Adjusting kitRocker Arm Nut5/16-24 in ThreadConversion to AdjustableSteelBlack OxideSmall Block FordKit
    COM4610-16
    SKU:
    COM4610-16
    Availability:
    Ships Same Business Day
    Weight:
    0.71 LBS
    MFG Part #:
    4610-16
    $54.95
    Qty in Cart: 0
    Quantity:
    Price:
    $54.95
    Subtotal:
  • 3/8 Hi-Tech Polylocks  COM4604-16

    Comp Cams 3/8 Hi-Tech Polylocks 4604-16

    COMP CAMS

    $60.95
    3/8 Hi-Tech Polylocks Rocker Arm NutHigh Energy Polylock3/8-24 in ThreadSteelBlack OxideSet of 16
    COM4604-16
    SKU:
    COM4604-16
    Availability:
    Ships Same Business Day
    Weight:
    1.19 LBS
    MFG Part #:
    4604-16
    $60.95
    Qty in Cart: 0
    Quantity:
    Price:
    $60.95
    Subtotal:
  • 7/16 Magnum Polylocks  COM4603-16

    Comp Cams 7/16 Magnum Polylocks 4603-16

    COMP CAMS

    $65.95
    7/16 Magnum Polylocks Rocker Arm NutMagnum Polylock7/16-20 in ThreadSteelBlack OxideSet of 16
    COM4603-16
    SKU:
    COM4603-16
    Availability:
    Ships Same Business Day
    Weight:
    1.67 LBS
    MFG Part #:
    4603-16
    $65.95
    Qty in Cart: 0
    Quantity:
    Price:
    $65.95
    Subtotal:
  • 3/8 Magnum Polylocks  COM4602-16

    Comp Cams 3/8 Magnum Polylocks 4602-16

    COMP CAMS

    $65.95
    3/8 Magnum Polylocks Rocker Arm NutMagnum Polylock3/8-24 in ThreadSteelBlack OxideSet of 16
    COM4602-16
    SKU:
    COM4602-16
    Availability:
    Ships Same Business Day
    Weight:
    1.48 LBS
    MFG Part #:
    4602-16
    $65.95
    Qty in Cart: 0
    Quantity:
    Price:
    $65.95
    Subtotal:
  • Hi-Tech Polylock 3/8 For Alm-Ss-Pro-Mag Rockers COM4601-16

    Comp Cams Hi-Tech Polylock 3/8 For Alm-Ss-Pro-Mag Rockers 4601-16

    COMP CAMS

    $65.95
    Hi-Tech Polylock 3/8 For Alm-Ss-Pro-Mag RockersRocker Arm NutHi-Tech Polylock3/8-24 in ThreadSteelBlack OxideSet of 16
    COM4601-16
    SKU:
    COM4601-16
    Availability:
    Ships Same Business Day
    Weight:
    1.06 LBS
    MFG Part #:
    4601-16
    $65.95
    Qty in Cart: 0
    Quantity:
    Price:
    $65.95
    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

SECURE & SAFE PAYMENT

EASY RETURNS

FAST DELIVERY

AUTHORIZED DEALER