1973 Engine Blocks & Accessories Engines & Components - Free Shipping on Orders Over $109 at Summit Racing

Dart Main Bolts 66732750

Main Bolt, 4-Bolt Main, Standard Hex Head, 1/2 in. Thread, 2.750 in. UHL, Each

Part Number: DRT-66732750

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

...Loading

Estimated Ship Date: Apr 13, 2026 if ordered today

Pioneer Automotive Main Caps 839020

Four Bolt Main Cap Kit

Part Number: PIO-839020

Not Yet Reviewed

...Loading

Pioneer Automotive Main Caps 839021

Four Bolt Main Cap Kit

Part Number: PIO-839021

Not Yet Reviewed

...Loading

Pioneer Automotive Engine Expansion Plugs PE-131-B

EXP PLUG KIT

Part Number: PIO-PE-131-B

Not Yet Reviewed

...Loading

Pioneer Automotive Engine Expansion Plugs PE-139-B

EXP PLUG KIT

Part Number: PIO-PE-139-B

Not Yet Reviewed

...Loading

Pioneer Automotive Engine Expansion Plugs PE-148-BR

EXP PLUG KIT

Part Number: PIO-PE-148-BR

Not Yet Reviewed

...Loading

Brodix Cylinder Heads Block Parts Kits SKBLOCKSBCI

BLOCK KIT

Part Number: BRO-SKBLOCKSBCI

Not Yet Reviewed

Estimated Ship Date: Mar 30, 2026 if ordered today

...Loading

Estimated Ship Date: Mar 30, 2026 if ordered today

Milodon Main Stud Kits 81184

Milodon Main Stud Kits 81184

Main Studs, 4-Bolt Main, with Milidon Angled Main Caps, Windage Tray, Chrysler, 318, 340, 360, Kit

Part Number: MIL-81184

Not Yet Reviewed

Estimated Ship Date: Jun 1, 2026 if ordered today

...Loading

Estimated Ship Date: Jun 1, 2026 if ordered today

Dart Iron Eagle Small Block Ford Cast Iron Bare Blocks 31395235

Engine Block, Iron Eagle, Gen 2, Iron Block, 4 Bolt Mains, 351W, 9.500 in. Deck Height, 4.125 in. Bore, Ford, Each

Part Number: DRT-31395235

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

...Loading

Estimated Ship Date: Apr 20, 2026 if ordered today

Pioneer Automotive Engine Expansion Plugs EP-14-25

EXPANSION PLUG 25 PC

Part Number: PIO-EP14-25

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

...Loading

Estimated Ship Date: Mar 16, 2026 if ordered today

Pioneer Automotive - Engine Expansion Plugs for 1972-1973 CARINA, 1971-1982 COROLLA - PE-133-BR

BR EXP PLUG KIT

Part Number: PIO-PE-133-BR

Not Yet Reviewed

...Loading

Milodon Main Caps 11365

Main Caps, Ductile Iron, 5-Cap Set, Straight, 2-Bolt, Chrysler, Dodge, Plymouth, 426-440, Set

Part Number: MIL-11365

Not Yet Reviewed

...Loading

Milodon Main Stud Kits 81189

Main Studs, 2-Bolt, Ford, 429, 460 with Windage Tray, Kit

Part Number: MIL-81189

Not Yet Reviewed

...Loading

Milodon Main Stud Kits 81217

Main Studs, 2-Bolt, Oldsmobile, 350, 400, 425, 455, with Windage Tray, Kit

Part Number: MIL-81217

Not Yet Reviewed

Estimated Ship Date: May 19, 2026 if ordered today

...Loading

Estimated Ship Date: May 19, 2026 if ordered today

Milodon Main Stud Kits 81129

Main Studs, 4-Bolt Main, Chevy, Large Journal, Small Block, with Milodon Caps, Windage Tray, Kit

Part Number: MIL-81129

Not Yet Reviewed

Estimated Ship Date: May 19, 2026 if ordered today

...Loading

Estimated Ship Date: May 19, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

ARP Main Stud Kits 234-5605

5 out of 5 stars ( 1 )

Estimated Ship Date: Apr 8, 2026

...Loading

Milodon Main Stud Kits 81134

Main Studs, 4-Bolt Main, Chevy, Big Block, with Milodon Caps, Windage Tray, Kit

Part Number: MIL-81134

Not Yet Reviewed

Estimated Ship Date: May 19, 2026 if ordered today

...Loading

Estimated Ship Date: May 19, 2026 if ordered today

Milodon Main Stud Kits 81156

Main Studs, 2-Bolt, Ford, 289, 302, with Windage Tray, Kit

Part Number: MIL-81156

Not Yet Reviewed

Estimated Ship Date: Jun 3, 2026 if ordered today

...Loading

Estimated Ship Date: Jun 3, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

ARP Main Stud Kits 254-5501

4.75 out of 5 stars ( 3 )

Estimated Ship Date: Monday 3/9/2026

...Loading

Philadelphia Racing Products AN Block Adapters PRP-6851

AN Block Adapters, -16 AN Adapters, Clear Anodized, Chevy, Small Block, Kit

Part Number: PGP-PRP-6851

Not Yet Reviewed

Estimated Ship Date: Mar 18, 2026 if ordered today

...Loading

Estimated Ship Date: Mar 18, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK16B

Engine Expansion Plug Kit 59-81 BUI/GM/PON 4.3L/4.6L/4.9L/5.0L/5.3L/5.7L/6.4L/6.6L/6.9L/7.0L/7.5L

Part Number: EGN-PK16B

Not Yet Reviewed

Estimated Ship Date: Mar 30, 2026 if ordered today

...Loading

Estimated Ship Date: Mar 30, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK17

Engine Expansion Plug Kit 64-90 AMC/JEP 3.3L/3.8L/4.2L

Part Number: EGN-PK17

Not Yet Reviewed

Estimated Ship Date: Mar 30, 2026 if ordered today

...Loading

Estimated Ship Date: Mar 30, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK6B

Engine Expansion Plug Kit 60-83 FRD/MER 2.4L/2.8L/3.3L/4.1L

Part Number: EGN-PK6B

Not Yet Reviewed

Estimated Ship Date: Mar 30, 2026 if ordered today

...Loading

Estimated Ship Date: Mar 30, 2026 if ordered today

Milodon Main Stud Kits 81219

Main Studs, 2-Bolt Main, with Windage Tray, Oldsmobile, 400, 425, 455, Kit

Part Number: MIL-81219

3.75 out of 5 stars ( 4 )

...Loading

Milodon Main Caps 11190

Main Caps, Ductile Iron, 3-Center, Angled Outer Bolts, 4-Bolt, Chevy, Small Block, 7.245 Wide, Set

Part Number: MIL-11190

5.0 out of 5 stars ( 1 )

Estimated Ship Date: May 18, 2026 if ordered today

...Loading

Estimated Ship Date: May 18, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK26

Engine Expansion Plug Kit 68-97 FRD/LIN/MER 6.1L/7.0L/7.5L

Part Number: EGN-PK26

Not Yet Reviewed

Estimated Ship Date: Mar 30, 2026 if ordered today

...Loading

Estimated Ship Date: Mar 30, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK18

Engine Expansion Plug Kit 66-91 AMC/JEP 4.7L/5.0L/5.6L/5.9L/6.4L/6.6L

Part Number: EGN-PK18

Not Yet Reviewed

Estimated Ship Date: Mar 30, 2026 if ordered today

...Loading

Estimated Ship Date: Mar 30, 2026 if ordered today