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USA Standard

Ring & Pinion Set, USA Standard, GM 12-Bolt 8.875" (12P), 3.73 Ratio

Vehicle Specific View fitment for 4 models
Part# : C220050
Mfg#: YUKZG GM12P-373
Sold As: Set
Ship Size: Oversize 3
$351.99
List Price: $387.95
You Save $35.96
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Top-Quality, State Of The Art Manufacturing

A precision gear set you can depend on for years to come

Having the right gears in your differential is crucial to your vehicle’s performance. OPGI is proud to offer some of the finest gear sets on the market today. All ring and pinion gear sets are precision engineered to OE tolerances.

Notes

  • This item is not eligible for any further discounts or promotional pricing.
  • SHIP NOTE: Item exceeds standard ground freight size/weight, and is not eligible for free ground shipping.

Find Item In These Catalogs

  • 2025 Chevelle, El Camino 64-77 227
  • 2025 GTO, LeMans & Tempest 149
  • 2025 Monte Carlo 70-77 97
WARNING: This product can expose you to chemicals including lead, sulfur, nickel, chromium, vanadium, titanium, polyvinyl chloride, and 4,4’-methylenebis (2-chloroaniline), which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Vehicle Fitment

Year Make Model Application Details
1964–1977 Chevrolet Chevelle 12-Bolt 8.875" - 3.73 ratio
1964–1977 Chevrolet El Camino 12-Bolt 8.875" - 3.73 ratio
1970–1977 Chevrolet Monte Carlo 12-Bolt 8.875" - 3.73 ratio
1970–1973 Pontiac GTO Corp. 12-Bolt 8.875" - 3.73 ratio
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Ring & Pinion Set, USA Standard, GM 12-Bolt 8.875
USA Standard Ring & Pinion Set, USA Standard, GM 12-Bolt 8.875" (12P), 3.73 Ratio