Availability
1973 Engine Blocks & Accessories
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
Estimated Ship Date: May 19, 2026 if ordered today
Need It Sooner? We recommend these similar substitute parts:
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
Estimated Ship Date: May 19, 2026 if ordered today
EXP PLUG KIT
Part Number: PIO-PE-131-B
Not Yet Reviewed
EXP PLUG KIT
Part Number: PIO-PE-139-B
Not Yet Reviewed
EXP PLUG KIT
Part Number: PIO-PE-148-BR
Not Yet Reviewed
Main Studs, 4-Bolt Main, Chevy, Big Block, with Milodon Caps, Windage Tray, Kit
Part Number: MIL-81141
Not Yet Reviewed
Estimated Ship Date: May 12, 2026 if ordered today
Estimated Ship Date: May 12, 2026 if ordered today
Main Cap Fasteners, Milodon Angle Bolt Caps, 8740 Chrome Steel Studs, 4130 Heat Treated Steel Washers and Nuts, Ford, 351 Windsor, Kit
Part Number: MIL-81164
Not Yet Reviewed
Main Studs, 4-Bolt, Chrysler, Big Block, with Milodon Caps, Kit
Part Number: MIL-81183
Estimated Ship Date: May 12, 2026 if ordered today
Estimated Ship Date: May 12, 2026 if ordered today
Main Studs, 4-Bolt, Pontiac, 326-455, with Windage Tray, Kit
Part Number: MIL-81224
Estimated Ship Date: May 12, 2026 if ordered today
Estimated Ship Date: May 12, 2026 if ordered today
Four Bolt Main Cap Kit
Part Number: PIO-839020
Not Yet Reviewed
Four Bolt Main Cap Kit
Part Number: PIO-839021
Not Yet Reviewed
Main Cap Fastener, Stud, Little M Sportsman, Kit
Part Number: DRT-66311100
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
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
Estimated Ship Date: Apr 13, 2026 if ordered today
Main Studs, 2-Bolt Main, Buick 1968-81, 350, Kit
Part Number: ARP-124-5402
Not Yet Reviewed
Estimated Ship Date: Mar 30, 2026 if ordered today
Estimated Ship Date: Mar 30, 2026 if ordered today
Main Studs, 2-Bolt Main, Chrysler, Dodge, Plymouth, 1960-83, 225, L6, Kit
Part Number: ARP-142-5401
Estimated Ship Date: Mar 30, 2026 if ordered today
Estimated Ship Date: Mar 30, 2026 if ordered today
Main Studs, 2-Bolt Main, Oldsmobile, 455, DRCE Iron Block, Kit
Part Number: ARP-285-5801
Not Yet Reviewed
Estimated Ship Date: Mar 30, 2026 if ordered today
Estimated Ship Date: Mar 30, 2026 if ordered today
Main Studs, 4-Bolt Main, Ford, 351, R-Block, Kit
Part Number: ARP-354-5605
Not Yet Reviewed
Estimated Ship Date: Mar 30, 2026 if ordered today
Estimated Ship Date: Mar 30, 2026 if ordered today
Main Bolts, Pro Series, 4-Bolt Main, Chevy, 350, with 1/2 in. Straps, Kit
Part Number: ARP-234-5203
Not Yet Reviewed
Estimated Ship Date: Mar 30, 2026 if ordered today
Estimated Ship Date: Mar 30, 2026 if ordered today
Main Studs, 4-Bolt Main, Chevy, 400, with Windage Tray, with 3.0 in. Outer Studs, Kit
Part Number: ARP-234-5607
Not Yet Reviewed
Estimated Ship Date: Mar 30, 2026 if ordered today
Estimated Ship Date: Mar 30, 2026 if ordered today
Main Studs, 4-Bolt Main, Ford, SVO, 351W, Kit
Part Number: ARP-154-5603
Not Yet Reviewed
Estimated Ship Date: Mar 30, 2026 if ordered today
Estimated Ship Date: Mar 30, 2026 if ordered today
Main Bolts, High Performance Series, 4-Bolt Main, Ford, SVO 351 Windsor, Kit
Part Number: ARP-154-5203
Not Yet Reviewed
Estimated Ship Date: Mar 30, 2026 if ordered today
Estimated Ship Date: Mar 30, 2026 if ordered today
Main Studs, Chromoly, 4-Bolt Main, Chevy, Oldsmobile, 350 with Dart Rocket Block, Kit
Part Number: ARP-184-5403
Not Yet Reviewed
Estimated Ship Date: Mar 30, 2026 if ordered today
Estimated Ship Date: Mar 30, 2026 if ordered today
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
Estimated Ship Date: Mar 30, 2026 if ordered today
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
Estimated Ship Date: Mar 30, 2026 if ordered today
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
Estimated Ship Date: Mar 30, 2026 if ordered today
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