Availability
1973 Transmission & Drivetrain
Transmission Modulator Valve, GM, TH300, TH350, TH400, Each
Part Number: ATP-JX66
Estimated Ship Date: Today
Estimated Ship Date: Today
HUB, BEARING, LIGHT TRUCK, 5x4.75/5.00 BC
Part Number: WIL-270-15104
Estimated Ship Date: Today
Estimated Ship Date: Today
Differential Cover, 10-bolt, Aluminum, Polished, GM 8.2 in., GM 8.5 in., GM 8.6 in., Each
Part Number: YGA-32030
Estimated Ship Date: Today
Estimated Ship Date: Today
Gear, Ring and Pinion, EXCel, 3.73:1 Ratio, GM, 8.875 in., 12-Bolt Car, Set
Part Number: RMG-12BC373T
Estimated Ship Date: Apr 14, 2026 if ordered today
Estimated Ship Date: Apr 14, 2026 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Summit Racing™ Ring and Pinion Sets SUM-741203 GM 8.875 in. (12-bolt) passenger car 3.73 Gears
Estimated Ship Date: Today
Ring and Pinion Gears, 3.25:1 Ratio, 28-spline, Standard Ring Gear Rotation, Ford 9 in., Set
Part Number: YGA-24367
Estimated Ship Date: Today
Estimated Ship Date: Today
Torque Converter, GM TH400 65-86 FB HS
Part Number: CCV-TQBU3HF
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Flywheel, PQx, Billet Steel, 153-tooth, 29.000 lbs., SFI 1.1, External Engine Balance, Chevy, 383, 400, Each
Part Number: PQX-1640071
Estimated Ship Date: Today
Estimated Ship Date: Today
Gear, Ring and Pinion, 4.56:1 Ratio, 1.375 in. Pinion, 26 Spline, 8.500 in. Ring Gear, Dana 44, Set
Part Number: YGA-24036
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Axle Shaft, 28-Spline, 30.438 in. Length, Buick, Chevy, GMC, Oldsmobile, Pontiac, 8.5 in., Rear, Each
Part Number: RMG-92-25157
Estimated Ship Date: Today
Estimated Ship Date: Today
Clutch Kit, RXT 1200, 1.062 in. - 10-spline, Ceramic Disc, Pressure Plate, Ford, Mercury, Kit
Part Number: MCL-6923-03HD
Not Yet Reviewed
Estimated Ship Date: Apr 27, 2026 if ordered today
Estimated Ship Date: Apr 27, 2026 if ordered today
Automatic Transmission Pan, Deep, Aluminum, Natural, Chrysler, Torqueflite A-904, Each
Part Number: TCI-127900
Estimated Ship Date: Today
Estimated Ship Date: Today
Motor Mount Bolts, Zinc Plated, Hex, With Washers, Mount to Block, Chevy, Small, Big Block, Set of 6
Part Number: SUM-910240
Estimated Ship Date: Today
Estimated Ship Date: Today
Bellhousing Bolts, Hex, Steel, Black Oxide, Chrysler, Dodge, Plymouth, Big Block, Kit
Part Number: ARP-145-0901
Estimated Ship Date: Today
Estimated Ship Date: Today
Universal Joint, Super Strength, 1310-1330 Conversion, Solid, Steel, Each
Part Number: MOG-253
Estimated Ship Date: Today
Estimated Ship Date: Today
Flexplate, Steel, External Balance, Ford, Non-SFI, Each
Part Number: PIO-FRA203
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Gear, Ring and Pinion, 3.73:1 Ratio, 1.438 in. Pinion, 25 Spline, 8.200 in. Ring Gear, GM 8.2 in., Set
Part Number: YGA-24151
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Summit Racing™ Ring and Pinion Sets SUM-741021 GM 8.2 in. 3.73 Gears
Estimated Ship Date: Today
Pinion Bearing Spacer, Crush Sleeve Eliminator, Steel, Ford 9 in., Each
Part Number: YGA-55041
Estimated Ship Date: Today
Estimated Ship Date: Today
Flexplate, 164-tooth, Steel, External, 28 oz. Imbalance, Ford, Each
Part Number: PIO-FRA205
Estimated Ship Date: Today
Estimated Ship Date: Today
Axle Shaft, OEM Replacement, C-clip, 1541H Alloy Steel, 28-spline Inner, 29.625 in. Length, Each
Part Number: MGR-MG1010
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Flexplate, 168-Tooth, External Engine Balance, 2-Piece Rear Main Seal, Chevy, Small Block, 400, Each
Part Number: SUM-G101STK
Estimated Ship Date: Today
Estimated Ship Date: Today
Pilot Bushing, 0.400 in. Extended Length, 0.592 in. ID, Bronze, Each
Part Number: MCL-8617
Estimated Ship Date: Today
Estimated Ship Date: Today
Flywheel, Nodular Iron, 21.3 lbs., Ford, 28.2 oz., Each
Part Number: FIZ-286280
Estimated Ship Date: Today
Estimated Ship Date: Today
Differential Pinion Yoke, 1310, 25 Spline, Steel, Ford 8 in., Each
Part Number: YGA-41047
Estimated Ship Date: Today
Estimated Ship Date: Today
Locking Hubs, Manual, Selectro Classic, Aluminum, Chrome, Dodge, International, W300/W350 Pickup/200, Pair
Part Number: MMK-11034-01
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Today
Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster