Engine Blocks & Accessories Engines & Components - Free Shipping on Orders Over $109 at Summit Racing

PRW Billet Steel Main Caps 1745501

Main Caps, Billet Steel, 4-Bolt Conversion or Replacement, Straight, 421-455 cid, V8, Dowel Pinned, Drill Guide, Large Journal, Pontiac, Set of 3

Part Number: PQX-1745501

Not Yet Reviewed

Estimated Ship Date: Feb 23, 2026 if ordered today

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Estimated Ship Date: Feb 23, 2026 if ordered today

Melling Cylinder Sleeves CSL9079

Melling Cylinder Sleeves CSL9079

Cylinder Sleeve, Cast Iron, 7.968 in. Bore I.D., 0.176 in. Wall Thickness, 22.000 in. Length, Each

Part Number: MEL-CSL9079

Not Yet Reviewed

Estimated Ship Date: Jan 16, 2026 if ordered today

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Estimated Ship Date: Jan 16, 2026 if ordered today

ARP Main Stud Kits 247-5403

Main Studs, 2-Bolt Main, Dodge, Cummins, 5.9L, 24V, Kit

Part Number: ARP-247-5403

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Estimated Ship Date: Jan 13, 2026 if ordered today

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Estimated Ship Date: Jan 13, 2026 if ordered today

ARP Main Stud Kits 202-5802

for Nissan VR38 main stud kit

Part Number: ARP-202-5802

Not Yet Reviewed

Estimated Ship Date: Jan 13, 2026 if ordered today

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Estimated Ship Date: Jan 13, 2026 if ordered today

Milodon Main Caps 11440

Main Caps, Ductile Iron, 3-Center, Angled Outer Bolts, 4-Bolt, Ford, 351C, Set

Part Number: MIL-11440

Not Yet Reviewed

Estimated Ship Date: Mar 19, 2026 if ordered today

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Estimated Ship Date: Mar 19, 2026 if ordered today

Cylinder Works Cylinders for 2009-2015 KX450F - 422-30011

STANDARD BORE CYLINDER

Part Number: CLW-30011

Not Yet Reviewed

Estimated Ship Date: Jan 14, 2026 if ordered today

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Estimated Ship Date: Jan 14, 2026 if ordered today

Cylinder Works Cylinders for 2010-2018 RMZ250 - 422-40004

STD BORE CYLINDER

Part Number: CLW-40004

Not Yet Reviewed

Estimated Ship Date: Jan 2, 2026 if ordered today

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Estimated Ship Date: Jan 2, 2026 if ordered today

ARP Main Cap Fasteners 251-5801

Ford 2.5L B5254 5cyl '05 & later main stud kit

Part Number: ARP-251-5801

Not Yet Reviewed

Estimated Ship Date: Jan 13, 2026 if ordered today

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Estimated Ship Date: Jan 13, 2026 if ordered today

Gator Fasteners Main Stud Kits MSK6265

Main Studs, 4-Bolt Main, Chevy, Diesel, 6.2/6.5L, Kit

Part Number: GFN-MSK6265

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Howards Cams Extreme Billet Main Caps H400

Main Caps, Billet Steel, 3-Center, Splayed Outer Bolts, 4-Bolt, Chevy, Small Block, Set of 3

Part Number: HRS-H400

Not Yet Reviewed

Estimated Ship Date: Feb 9, 2026 if ordered today

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Estimated Ship Date: Feb 9, 2026 if ordered today

Pioneer Performance Freeze Plugs EPC-41-B-100

EXPANSION PLUG

Part Number: PIO-EPC-41-B-100

Not Yet Reviewed

Estimated Ship Date: Jan 9, 2026 if ordered today

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Estimated Ship Date: Jan 9, 2026 if ordered today

World Products Main Caps WPIWPI703370R

Main Cap, Rear, Merlin III/IV, 4-Bolt, 454 Mains, Billet Steel, Chevrolet, Big Block, Each

Part Number: WRL-WPI703370R

Not Yet Reviewed

Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

ARP Main Stud Kits 230-5401

Main Studs, Chromoly, Hex Head, 2-Bolt, Chevy, 6.6L, Duramax Diesel, LB7, LLY, Kit

Part Number: ARP-230-5401

Not Yet Reviewed

Estimated Ship Date: Jan 6, 2026 if ordered today

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Estimated Ship Date: Jan 6, 2026 if ordered today

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Summit Racing™ Extreme Duty Main Studs SUM-910522

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Estimated Ship Date: Today

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PRW Main Cap Stud Kits 1000323

Main Studs, SCM-4140 Alloy Steel, 12-Point, 2-Bolt, Chevy, 6.6L, Duramax Diesel, LBZ/LMM, Kit

Part Number: PQX-1000323

Not Yet Reviewed

Estimated Ship Date: Feb 23, 2026 if ordered today

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Estimated Ship Date: Feb 23, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Summit Racing™ Extreme Duty Main Studs SUM-910523

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Estimated Ship Date: Today

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Dorman Rear Main Seal Covers 635-118

Rear Main Seal Cover, Aluminum, Natural, Ford, 6.0L Diesel, 6.4L Diesel, Kit

Part Number: RNB-635-118

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 12, 2026 if ordered today

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Estimated Ship Date: Jan 12, 2026 if ordered today

Isky Keyway Lifter Bore Bushings KLB936

Lifter Bushing, 1.062 in. O.D., 0.936 in. I.D., 1.990 in. Length, Bronze, Keyway, Chevy, Set of 16

Part Number: ISK-KLB936

Not Yet Reviewed

Estimated Ship Date: Today

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Cylinder Works Cylinders 422-60001

Top End Engine Kits STANDARD BORE CYLINDER STANDARD BORE CYLINDER

Part Number: CLW-60001

Not Yet Reviewed

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PRW Billet Steel Main Caps 1744002

Main Caps, Billet Steel, Two 2-Bolt, Three Cross-Bolt, 383-440 c.i.d., Big Block Mopar, B/RB, V8, Chrysler, Dodge, Plymouth, Set of 5

Part Number: PQX-1744002

Not Yet Reviewed

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Gator Fasteners Main Stud Kits MSK5912

Main Studs, 2-Bolt Main, Cummins, 5.9L, Kit

Part Number: GFN-MSK5912

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Gator Fasteners Main Stud Kits MSK5924

Main Studs, 2-Bolt Main, Cummins, 5.9L, Kit

Part Number: GFN-MSK5924

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Gator Fasteners Main Cap Fasteners MSK59CR

Heavy Duty Main Stud Kit for Dodge (2003-07) 5.9L Common Rail Cummins Diesel w/ Factory Girdle

Part Number: GFN-MSK59CR

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Gator Fasteners Main Stud Kits MSK60

Main Studs, 4-Bolt Main, Ford, Powerstroke, 6.0L, Kit

Part Number: GFN-MSK60

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Gator Fasteners Main Stud Kits MSK64

Main Studs, 4-Bolt Main, Ford, Powerstroke, 6.4L, Kit

Part Number: GFN-MSK64

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Gator Fasteners Main Stud Kits MSK66ZM

Main Studs, 2-Bolt Main, Chevrolet, Duramax, 6.6L, LBM, LMM, Kit

Part Number: GFN-MSK66ZM

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Gator Fasteners Main Cap Fasteners MSK73

Heavy Duty Main Stud Kit for Ford (1994-03) 7.3L Power Stroke Diesel

Part Number: GFN-MSK73

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today