Secure your engine's main caps with precision-engineered Main Cap Fasteners from top brands like ARP, PRW Industries, Point 1 Manufacturing, and more. Designed for strength and reliability, these fasteners ensure a tight, durable hold, crucial for maintaining engine stability under extreme racing conditions. Explore our selection to find the perfect fasteners for your high-performance build.


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Main Cap Fasteners

23 Products

Point One Main Stud Kit, E190 Series, 12-Point Nuts, 4-Bolt Mains, Standard Material, Black Oxide, GM LT-Series (Gen V 6.2L / LT1)SKU: P1M-K003-M01E
$249.99
Point One Main Stud Kit, E190 Series, 12-Point Nuts, 4-Bolt Mains, Standard Material, Black Oxide, GM LS-Series (Gen 3 / LSX / Not LT1)SKU: P1M-K003-M03E
$304.99
Point One Main Stud Kit, E190 Series, 12-Point Nuts, 2-Bolt Mains, Standard Material, Black Oxide, Chrysler 5.7L & 6.1L Gen III HemiSKU: P1M-K033-M01E
$178.99
Point One Main Stud Kit, S220 Series, 12-Point Nuts, 2-Bolt Mains, Premium Material, Black Oxide, Dodge Cummins 5.9L Diesel w/ Factory Block (2004 & Later)SKU: P1M-K044-M01S
$299.99
Point One Main Stud Kit, S220 Series, 12-Point Nuts, 2-Bolt Mains, Premium Material, Black Oxide, Dodge Cummins 6.7L Diesel w/ Factory Girdle (2006 & Later)SKU: P1M-K044-M02S
$299.99
Point One Main Stud Kit, E190 Series, 12-Point Nuts, 4-Bolt Mains, Standard Material, Black Oxide, Ford Coyote 5.0LSKU: P1M-K062-M01E
$349.99
ARP Main Bolt Kit, High Performance Series, Hex Head, 4-Bolt Mains, Chromoly, Black Oxide, Small Block Chevy (Large Journal)SKU: ARP-134-5202
$62.58
ARP Main Bolt Kit, High Performance Series, 12-Point Head, 2-Bolt Mains, Chromoly, Black Oxide, Small Block Mopar / B / RB-SeriesSKU: ARP-140-5002
$61.32
ARP Main Stud Kit, Hex Nuts, 2-Bolt Mains, Chromoly, Black Oxide, Small Block Chevy (Large Journal)SKU: ARP-134-5401
$71.64
ARP Main Stud Kit, Hex Nuts, 4-Bolt Mains, Chromoly, Black Oxide, Small Block Chevy (Large Journal)SKU: ARP-134-5601
$108.51
ARP Main Stud Kit, Hex Nuts, 4-Bolt Mains, Chromoly, Black Oxide, Small Block Chevy (Dart SHP)SKU: ARP-134-5605
$104.27
ARP Main Stud Kit, 12-Point Nuts, 4-Bolt Mains, Chromoly, Black Oxide, Small Block Chevy (Dart Little M)SKU: ARP-134-5801
$153.23
ARP Main Stud Kit, Hex Nuts, 2-Bolt Mains, Chromoly, Black Oxide, Small Block FordSKU: ARP-154-5403
$90.12
ARP Main Stud Kit, Hex Nuts, 2-Bolt Mains, Chromoly, Black Oxide, Big Block FordSKU: ARP-155-5402
$94.87
ARP Main Stud Kit, Hex Nuts, 4-Bolt Mains, Chromoly, Black Oxide, Big Block FordSKU: ARP-155-5501
$148.06
ARP Main Stud Kit, Hex Nuts, 4-Bolt Mains, Chromoly, Black Oxide, Ford Modular (w/o Windage Tray)SKU: ARP-156-5802
$263.95
ARP Main Stud Kit, Hex Nuts, 4-Bolt Mains, Chromoly, Black Oxide, Ford CoyoteSKU: ARP-156-5803
$347.73
ARP Main Stud Kit, Hex Nuts, 2-Bolt Mains, Chromoly, Black Oxide, Mazda 4-CylinderSKU: ARP-218-5402
$134.75
ARP Main Stud Kit, Hex Nuts, 4-Bolt Mains, Chromoly, Black Oxide, Small Block Chevy (Large Journal / Windage Tray)SKU: ARP-234-5601
$192.85
ARP Main Stud Kit, Hex Nuts, 4-Bolt Mains, Chromoly, Black Oxide, GM LS-SeriesSKU: ARP-234-5608
$302.48
ARP Main Stud Kit, Hex Nuts, 4-Bolt Mains, Chromoly, Black Oxide, Big Block Chevy (Dart Big M w/ Splayed Caps)SKU: ARP-235-5603
$152.77
ARP Main Stud Kit, Hex Nuts, 4-Bolt Mains, Chromoly, Black Oxide, SVO, Outer Bolts, Small Block FordSKU: ARP-354-5604
$142.38
PRW Industries Main Cap Girdle Kit, 3/8" Thick, Billet Steel, Zinc Oxide, Small Block Ford (Hardware Included)SKU: PRW-0930200
$148.87