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GM 8.875" 12 Bolt, 12T, 3.73, Nitro Ring & Pinion
GM 8.875", 12 Bolt -Truck, 12T, Ring & Pinion

GM 12 Bolt - Truck 3.73 R&P
Price: $231.00

Product Code: GM12T-373-NG

Description Vehicle Applications Warranty Information

GM 8.875" 12 Bolt - Truck
3.73 Nitro Ring & Pinion

Differential: GM 8-7/8" 12 Bolt - Truck
Gear Ratio: 3.73
Tooth Count: 41/11
Pinion Splines: 30
Ring Gear Bolts: 12 (not included)
Manufacturer: Nitro Gear & Axle
Warranty: 2 Years

Nitro gears are manufactured from 8620 steel gear forgings in the same manufacturing facilities as GM, Dodge, Ford & Toyota. They are precision machined using computer controlled processes, heat treated, CNC triple-lapped and Rockwell tested for hardness. These extra steps ensure excellent fitment, ideal contact pattern and smooth, quiet operation.

Nitro Gear and Axle Premium Differential Ring and Pinion Gears, Axles and parts


This product can expose you to chemicals including toluene and benzene, 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

  • 2 Year Warranty*
Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 1 Write a review »

  0 of 0 people found the following review helpful:
5 of 5 nitro 3.73 gear 1100hp no issue! April 13, 2020
Reviewer: The Shop from Kettle Falls, WA United States  
Ran the nitro gear in my 1100 hp twin turbo LS truck 12 bolt . After numerous  passes many dyno runs and many street miles for a couple years they held up fine. Only reason for change was for service reasons. We like keeping everything fresh in the drivetrain.

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