Engine Blocks & Parts | Summit Racing

PRW Billet Steel Main Caps 1738901

Main Caps, Billet Steel, 4-Bolt Conversion or Replacement, Straight, 326-400 cid, V8, Dowel Pinned, Drill Guide, Small Journal, Pontiac, Set of 3

Part Number: PQX-1738901

Not Yet Reviewed

Estimated Ship Date: May 21, 2026 if ordered today

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Estimated Ship Date: May 21, 2026 if ordered today

PRW Main Girdle Stud Kits 1000213

STUD KIT, MAIN GIRDLE, OLDS 455, incl PRW studs & hardwareStuds, PRW Fasteners & Hardware.

Part Number: PQX-1000213

Not Yet Reviewed

Estimated Ship Date: May 20, 2026 if ordered today

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Estimated Ship Date: May 20, 2026 if ordered today

Milodon Main Caps 11362

Milodon Main Caps 11362

Main Caps, 5-cap Set Position, Straight, 2-bolt, Ductile Iron, Chrysler, Dodge, Plymouth, 383, 400, Set

Part Number: MIL-11362

Not Yet Reviewed

Estimated Ship Date: May 19, 2026 if ordered today

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Estimated Ship Date: May 19, 2026 if ordered today

ARP Main Stud Kits 218-5401

Main Studs, 2-Bolt, Mazda, 1.6, 1.8L, Kit

Part Number: ARP-218-5401

Not Yet Reviewed

Estimated Ship Date: Today

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Howards Cams Main Caps H350S-1

Main Cap, SB Chev 350

Part Number: HRS-H350S-1

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

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Estimated Ship Date: May 11, 2026 if ordered today

Milodon Main Stud Kits 81146

Main Cap Fasteners, Two Bolt Caps with Windage Tray, 8740 Chrome Steel Studs, 4130 Heat Treated Steel Washers and Nuts, Holden, V8, Kit

Part Number: MIL-81146

Not Yet Reviewed

Estimated Ship Date: Jun 15, 2026 if ordered today

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Estimated Ship Date: Jun 15, 2026 if ordered today

PRW Main Cap Stud Kits 1035042

Main Studs, 8740 Chromoly, 200,000 Psi Tensile Strength, Large Journal, 4-Bolt Main, Chevy, Small Block, Kit

Part Number: PQX-1035042

Not Yet Reviewed

Estimated Ship Date: Today

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ARP High Performance Series Main Bolts 184-5001

Main Bolts, High Performance Series, 2-Bolt Main, Oldsmobile, 350, Kit

Part Number: ARP-184-5001

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Milodon Main Stud Kits 81137

Main Studs, Straight 4-Bolt Main, Chevy, Big Block, Kit

Part Number: MIL-81137

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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ARP Main Stud Kits 193-5401

Main Studs, Chromoly, Hex Head, Buick, 3.8L, Supercharged, Kit

Part Number: ARP-193-5401

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Top Street Performance Main Cap Fasteners 734-21168

PRO SERIES REAR MAIN SEAL HOUSING BOLT KIT - GM GEN III/IV LS, 12-PT

Part Number: TSN-734-21168

Not Yet Reviewed

Estimated Ship Date: May 19, 2026 if ordered today

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Estimated Ship Date: May 19, 2026 if ordered today

World Products Main Caps 703370-5

BILLET MAIN CAPS

Part Number: WRL-703370-5

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Milodon Main Caps 11310

Main Caps, Ductile Iron, 3-Center, Angled Outer Bolts, 4-Bolt, Chrysler, Dodge, Plymouth, 360, Set

Part Number: MIL-11310

Not Yet Reviewed

Estimated Ship Date: Jun 8, 2026 if ordered today

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Estimated Ship Date: Jun 8, 2026 if ordered today

Milodon Main Caps 11180

Main Caps, Ductile Iron, 3-Center, Angled Outer Bolts, 4-Bolt, 400 Main, Chevy, Small Block, Set

Part Number: MIL-11180

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Jun 10, 2026 if ordered today

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Estimated Ship Date: Jun 10, 2026 if ordered today

PRW Billet Steel Main Caps 1745402

Main Caps, Billet Steel, 4-Bolt, Straight, Chevy, Big Block, Set of 3

Part Number: PQX-1745402

Not Yet Reviewed

Estimated Ship Date: May 21, 2026 if ordered today

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Estimated Ship Date: May 21, 2026 if ordered today

Trick Flow® Main Cap Fastener Replacement Hardware Kits TFS-5150R700-HK

Replacement, Hardware Kit, 2-Bolt Main, Ford, with Trick Flow® Main Cap Girdle,

Part Number: TFS-5150R700-HK

Not Yet Reviewed

Estimated Ship Date: Today

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World Products Merlin Main Cap Dowel Pins WPI701545

Main Cap Dowel Pins, Steel, Merlin III, Each

Part Number: WRL-701545

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

PRW Main Cap Stud Kits 1035022

Main Studs, 8740 Chromoly, 200,000 Psi Tensile Strength, Large Journal, 2-Bolt Main, Chevy, Small Block, Kit

Part Number: PQX-1035022

Not Yet Reviewed

Estimated Ship Date: May 20, 2026 if ordered today

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Estimated Ship Date: May 20, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Summit Racing™ Main Stud Kits SUM-910205

2.75 out of 5 stars ( 3 )

Estimated Ship Date: Today

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PRW Main Cap Stud Kits for 1998-2008 RAM 2500, RAM 3500 - 1000313

Main Cap Studs, 4140 Studs, Parallel Ground Washers, 12-Point Nuts, 2-Bolt Mains, 5.9L, 24V, L6, Cummins, Diesel, Dodge, Kit

Part Number: PQX-1000313

Not Yet Reviewed

Estimated Ship Date: May 21, 2026 if ordered today

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Estimated Ship Date: May 21, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Summit Racing™ Extreme Duty Main Studs SUM-910513

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Estimated Ship Date: Today

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ARP Main Stud Kits 155-5501

Main Studs, 4-Bolt Main, Ford 429, 460, Kit

Part Number: ARP-155-5501

Not Yet Reviewed

Estimated Ship Date: Today

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Top Street Performance Main Cap Fasteners 673-131952

PRO SERIES MAIN STUD KIT - FORD GODZILLA 7.3L, 12-PT

Part Number: TSN-673-131952

Not Yet Reviewed

Estimated Ship Date: May 19, 2026 if ordered today

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Estimated Ship Date: May 19, 2026 if ordered today

Milodon Main Stud Kits 81166

Main Studs, 2-Bolt, Ford, 351W, with Windage Tray, Kit

Part Number: MIL-81166

Not Yet Reviewed

Estimated Ship Date: Jun 15, 2026 if ordered today

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Estimated Ship Date: Jun 15, 2026 if ordered today

Milodon Main Caps 11501

Main Caps, Front Position, Straight, 4-bolt, Ductile Iron, Pontiac, 421, 428, 455, Each

Part Number: MIL-11501

Not Yet Reviewed

Estimated Ship Date: Jun 9, 2026 if ordered today

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Estimated Ship Date: Jun 9, 2026 if ordered today

Dart SHP Special High Performance Individual Main Caps 32791030

Main Cap, Center, Ductile Iron, 4-Bolt, Angled, Chevy, SHP Dart Block, Each

Part Number: DRT-32791030

Not Yet Reviewed

Estimated Ship Date: May 27, 2026 if ordered today

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Estimated Ship Date: May 27, 2026 if ordered today

Milodon Main Caps 11570

Main Caps, Angled Side Bolt, Ductile Iron, CNC Machined, Holden, V8, Kit

Part Number: MIL-11570

Not Yet Reviewed

Estimated Ship Date: Jun 15, 2026 if ordered today

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Estimated Ship Date: Jun 15, 2026 if ordered today