Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster
Charts & Guides for Part Number SPZ-36191
USA Standard Gear ZG Series Ring and Pinion Sets ZG GM55P-373 GM 55P (8.2 in. Drop out) 3.73 Gears
Part Number: SPZ-36191
USA Standard Gear ZG Series Ring and Pinion Sets
USA Standard Ring & Pinion gear set for GM Chevy 55P in a 3.73 ratio
See More Specifications
|
Check the Fit
Estimated Ship Date: Oct 22, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
ZG GM55P-373
Part Type:
Product Line:
Summit Racing Part Number:
SPZ-36191
UPC:
883584361916
Differential Case Design Type:
GM 55P (8.2 in. Drop out)
Ring and Pinion Ratio:
3.73:1
Ring Gear Bolts:
10
Pinion Spline Count:
17
Ring Gear Rotation:
Standard
Ring Gear Teeth:
39
Pinion Gear Teeth:
11
Ring Gear Diameter (in.):
8.200 in.
Pinion Shaft Diameter (in.):
1.438 in.
Installation Kit Included:
No
Cover Gasket Included:
No
Pinion Shims Included:
No
Carrier Shims Included:
No
Crush Sleeve Included:
No
Pinion Seal Included:
No
Pinion Nut Included:
No
Ring Gear Bolts Included:
No
Head Bearing Included:
No
Tail Bearing Included:
No
Carrier Bearings Included:
No
Axle Seals Included:
No
Axle Bearings Included:
No
Differential Cover Included:
No
Differential Oil Included:
No
Friction Modifier Included:
No
Installation DVD Included:
No
Quantity:
Sold as a set.
Notes:
Designed to fit 1955-64 passenger cars.
USA Standard Gear ZG Series Ring and Pinion Sets
USA Standard Gear ZG series ring and pinion sets are quality OE replacements. They're offered for a wide variety of common and hard-to-find applications, differential case designs, and ratios. The right choice adds confidence to your install; select the USA Standard ZG series ring and pinion set recommended for your stock vehicle.
Applications
Loading...
Loading...
Questions & Answers
Ask a Question
What type of question would you like to submit?
I have a Customer Service question
(order, shipping, returns, protection plans, etc.). Customer Service Question
(order, shipping, returns, protection plans, etc.). Customer Service Question
- OR -
I would like to ask other customers
a question about this Product. Product Related Question
a question about this Product. Product Related Question
Loading...
Reviews Write a Review
Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
Modal Header
Call To Order
This is a custom order part. You can order this part by Contacting Us.
Email this page
