Home / Shop / USA Standard Gear Ring and Pinion Sets ZG GM8.5-411 Gear, 4.11:1 Ratio, GM, 8.5 in./8.6 in., Rear, Set

USA Standard Gear Ring and Pinion Sets ZG GM8.5-411 Gear, 4.11:1 Ratio, GM, 8.5 in./8.6 in., Rear, Set

SKU: SPZGM8.5-411

Ring and Pinion Gears

Usa Standard Gear

USA Standard Gear Ring and Pinion Sets ZG GM8.5-411 Gear, 4.11:1 Ratio, GM, 8.5 in./8.6 in., Rear, Set

SKU: SPZGM8.5-411

Ring and Pinion Gears

IN STOCK! Est Ship 4-7 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.

We accept

Description

IMPORTANT NOTICE: Must use 2.73:1 or numerically higher ratio carrier.

USA Standard Gear ring and pinion sets are high-quality and precision-machined 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 ring and pinion set recommended for your vehicle.

Part Type

Ring and Pinion Gears

Data: v4.2 - Upd: 2026-10-16 00:15:56

Specifications

Product Attributes - Brand: USA Standard Gear
Product Attributes - Manufacturer's Part Number: ZG GM8.5-411
Product Attributes - Part Type: Ring and Pinion Gears
Product Attributes - Product Line: USA Standard Gear Ring and Pinion Sets
Product Attributes - UPC: 883584362166
Product Attributes - Differential Case Design Type: GM 8.5/8.6 in.
Product Attributes - Ring and Pinion Ratio: 4.11:1
Product Attributes - Cover Bolts: 10
Product Attributes - Ring Gear Bolts: 10
Product Attributes - Pinion Spline Count: 30
Product Attributes - Ring Gear Rotation: Standard
Product Attributes - Ring Gear Teeth: 41
Product Attributes - Pinion Gear Teeth: 10
Product Attributes - Ring Gear Diameter (in.): 8.500 in.
Product Attributes - Pinion Shaft Diameter (in.): 1.626 in.
Product Attributes - Installation Kit Included: No
Product Attributes - Cover Gasket Included: No
Product Attributes - Pinion Shims Included: No
Product Attributes - Carrier Shims Included: No
Product Attributes - Crush Sleeve Included: No
Product Attributes - Pinion Seal Included: No
Product Attributes - Pinion Nut Included: No
Product Attributes - Ring Gear Bolts Included: No
Product Attributes - Head Bearing Included: No
Product Attributes - Tail Bearing Included: No
Product Attributes - Carrier Bearings Included: No
Product Attributes - Axle Seals Included: No
Product Attributes - Axle Bearings Included: No
Product Attributes - Differential Cover Included: No
Product Attributes - Differential Oil Included: No
Product Attributes - Friction Modifier Included: No
Product Attributes - Installation DVD Included: No
Product Attributes - Quantity: Sold as a set.
Product Attributes - Notes: Must use 2.73:1 or numerically higher ratio carrier.

Reference Information

Brand Name/s	Usa Standard Gear
StreetFX SKU	spzGM8.5-411
SFX Item ID	4897307
Supplier Item Code	4897307
Manufacturer SKU	GM8.5-411
Manufacturer UPC	883584362166
Alternative References	SPZ-36216, in./8.6

Compatibility

Application Data

Make	BUICK
Model	APOLLO
Submodel	BASE
Beginning Year	1973
Ending Year	1974
Engine Type	L6
Engine Size	4.1L/250
Engine Family	GM inline 6-cylinder
Axle Location	Rear
Liter	4.1
CID	250
CC	4097
Application Notes	GM 8.5 & 8.6 in.; 10 Bolt; Ring and Pinion Set; 4.10 Ratio
Engine VIN Code	D

Make	BUICK
Model	APOLLO
Submodel	BASE
Beginning Year	1973
Ending Year	1974
Engine Type	L6
Engine Size	4.1L/250
Engine Family	GM inline 6-cylinder
Axle Location	Rear
Liter	4.1
CID	250
CC	4098
Application Notes	GM 8.5 & 8.6 in.; 10 Bolt; Ring and Pinion Set; 4.10 Ratio
Engine VIN Code	D

Make	BUICK
Model	APOLLO
Submodel	BASE
Beginning Year	1973
Ending Year	1974
Engine Type	V8
Engine Size	5.7L/350
Engine Family	Buick V8
Axle Location	Rear
Liter	5.7
CID	350
Application Notes	GM 8.5 & 8.6 in.; 10 Bolt; Ring and Pinion Set; 4.10 Ratio
Engine VIN Code	H

Make	BUICK
Model	APOLLO
Submodel	BASE
Beginning Year	1973
Ending Year	1974
Engine Type	V8
Engine Size	5.7L/350
Engine Family	Buick V8
Axle Location	Rear
Liter	5.7
CID	350
Application Notes	GM 8.5 & 8.6 in.; 10 Bolt; Ring and Pinion Set; 4.10 Ratio
Engine VIN Code	J

Make	BUICK
Model	APOLLO
Submodel	BASE
Beginning Year	1975
Ending Year	1975
Engine Type	L6
Engine Size	4.1L/250
Engine Family	GM inline 6-cylinder
Axle Location	Rear
Liter	4.1
CID	250
Application Notes	GM 8.5 & 8.6 in.; 10 Bolt; Ring and Pinion Set; 4.10 Ratio
Engine VIN Code	D

Make	BUICK
Model	APOLLO
Submodel	BASE
Beginning Year	1975
Ending Year	1975
Engine Type	V8
Engine Size	4.3L/260
Engine Family	Oldsmobile V8
Axle Location	Rear
Liter	4.3
CID	260
Application Notes	GM 8.5 & 8.6 in.; 10 Bolt; Ring and Pinion Set; 4.10 Ratio
Engine VIN Code	F

Make	BUICK
Model	APOLLO
Submodel	BASE
Beginning Year	1975
Ending Year	1975
Engine Type	V8
Engine Size	5.7L/350
Engine Family	Oldsmobile V8
Axle Location	Rear
Liter	5.7
CID	350
CC	5733
Application Notes	GM 8.5 & 8.6 in.; 10 Bolt; Ring and Pinion Set; 4.10 Ratio
Engine VIN Code	H

Make	BUICK
Model	APOLLO
Submodel	BASE
Beginning Year	1975
Ending Year	1975
Engine Type	V8
Engine Size	5.7L/350
Engine Family	Oldsmobile V8
Axle Location	Rear
Liter	5.7
CID	350
CC	5733
Application Notes	GM 8.5 & 8.6 in.; 10 Bolt; Ring and Pinion Set; 4.10 Ratio
Engine VIN Code	J

Make	BUICK
Model	APOLLO
Submodel	SR
Beginning Year	1975
Ending Year	1975
Engine Type	L6
Engine Size	4.1L/250
Engine Family	GM inline 6-cylinder
Axle Location	Rear
Liter	4.1
CID	250
Application Notes	GM 8.5 & 8.6 in.; 10 Bolt; Ring and Pinion Set; 4.10 Ratio
Engine VIN Code	D

Make	BUICK
Model	APOLLO
Submodel	SR
Beginning Year	1975
Ending Year	1975
Engine Type	V8
Engine Size	4.3L/260
Engine Family	Oldsmobile V8
Axle Location	Rear
Liter	4.3
CID	260
Application Notes	GM 8.5 & 8.6 in.; 10 Bolt; Ring and Pinion Set; 4.10 Ratio
Engine VIN Code	F

Make	BUICK
Model	APOLLO
Submodel	SR
Beginning Year	1975
Ending Year	1975
Engine Type	V8
Engine Size	5.7L/350
Engine Family	Oldsmobile V8
Axle Location	Rear
Liter	5.7
CID	350
CC	5733
Application Notes	GM 8.5 & 8.6 in.; 10 Bolt; Ring and Pinion Set; 4.10 Ratio
Engine VIN Code	H

Make	BUICK
Model	APOLLO
Submodel	SR
Beginning Year	1975
Ending Year	1975
Engine Type	V8
Engine Size	5.7L/350
Engine Family	Oldsmobile V8
Axle Location	Rear
Liter	5.7
CID	350
CC	5733
Application Notes	GM 8.5 & 8.6 in.; 10 Bolt; Ring and Pinion Set; 4.10 Ratio
Engine VIN Code	J

Make	BUICK
Model	ELECTRA
Submodel	225
Beginning Year	1971
Ending Year	1971
Engine Type	V8
Engine Size	7.5L/455
Engine Family	Buick V8
Axle Location	Rear
Liter	7.5
CID	455
CC	7456
Application Notes	GM 8.5 & 8.6 in.; 10 Bolt; Ring and Pinion Set; 4.10 Ratio

Make	BUICK
Model	ELECTRA
Submodel	225
Beginning Year	1971
Ending Year	1971
Engine Type	V8
Engine Size	7.5L/455
Engine Family	Buick V8
Axle Location	Rear
Liter	7.5
CID	455
CC	7456
Application Notes	GM 8.5 & 8.6 in.; 10 Bolt; Ring and Pinion Set; 4.10 Ratio

Make	BUICK
Model	ELECTRA
Submodel	225
Beginning Year	1971
Ending Year	1971
Engine Type	V8
Engine Size	7.5L/455
Engine Family	Buick V8
Axle Location	Rear
Liter	7.5
CID	455
CC	7456
Application Notes	GM 8.5 & 8.6 in.; 10 Bolt; Ring and Pinion Set; 4.10 Ratio

Make	BUICK
Model	ELECTRA
Submodel	225
Beginning Year	1971
Ending Year	1974
Engine Type	V8
Engine Size	7.5L/455
Engine Family	Buick V8
Axle Location	Rear
Liter	7.5
CID	455
CC	7456
Application Notes	GM 8.5 & 8.6 in.; 10 Bolt; Ring and Pinion Set; 4.10 Ratio
Engine VIN Code	U

Make	BUICK
Model	ELECTRA
Submodel	225
Beginning Year	1972
Ending Year	1974
Engine Type	V8
Engine Size	7.5L/455
Engine Family	Buick V8
Axle Location	Rear
Liter	7.5
CID	455
CC	7456
Application Notes	GM 8.5 & 8.6 in.; 10 Bolt; Ring and Pinion Set; 4.10 Ratio
Engine VIN Code	T

Make	BUICK
Model	ELECTRA
Submodel	225
Beginning Year	1972
Ending Year	1974
Engine Type	V8
Engine Size	7.5L/455
Engine Family	Buick V8
Axle Location	Rear
Liter	7.5
CID	455
CC	7456
Application Notes	GM 8.5 & 8.6 in.; 10 Bolt; Ring and Pinion Set; 4.10 Ratio
Engine VIN Code	V

Make	BUICK
Model	ELECTRA
Submodel	225
Beginning Year	1972
Ending Year	1974
Engine Type	V8
Engine Size	7.5L/455
Engine Family	Buick V8
Axle Location	Rear
Liter	7.5
CID	455
CC	7456
Application Notes	GM 8.5 & 8.6 in.; 10 Bolt; Ring and Pinion Set; 4.10 Ratio
Engine VIN Code	W

Make	BUICK
Model	ELECTRA
Submodel	225
Beginning Year	1976
Ending Year	1976
Engine Type	V8
Engine Size	5.7L/350
Engine Family	Buick V8
Axle Location	Rear
Liter	5.7
CID	350
Application Notes	GM 8.5 & 8.6 in.; 10 Bolt; Ring and Pinion Set; 4.10 Ratio
Engine VIN Code	X

Make	BUICK
Model	ELECTRA
Submodel	225
Beginning Year	1976
Ending Year	1976
Engine Type	V8
Engine Size	7.5L/455
Engine Family	Oldsmobile V8
Axle Location	Rear
Liter	7.5
CID	455
CC	7456
Application Notes	GM 8.5 & 8.6 in.; 10 Bolt; Ring and Pinion Set; 4.10 Ratio
Engine VIN Code	T

Make	BUICK
Model	ELECTRA
Submodel	225
Beginning Year	1977
Ending Year	1977
Engine Type	V8
Engine Size	5.7L/350
Engine Family	Oldsmobile V8
Axle Location	Rear
Liter	5.7
CID	350
CC	5733
Application Notes	GM 8.5 & 8.6 in.; 10 Bolt; Ring and Pinion Set; 4.10 Ratio
Engine VIN Code	H

Make	BUICK
Model	ELECTRA
Submodel	225
Beginning Year	1977
Ending Year	1977
Engine Type	V8
Engine Size	5.7L/350
Engine Family	Oldsmobile V8
Axle Location	Rear
Liter	5.7
CID	350
CC	5733
Application Notes	GM 8.5 & 8.6 in.; 10 Bolt; Ring and Pinion Set; 4.10 Ratio
Engine VIN Code	J

Make	BUICK
Model	ELECTRA
Submodel	225
Beginning Year	1977
Ending Year	1979
Engine Type	V8
Engine Size	5.7L/350
Engine Family	Oldsmobile V8
Axle Location	Rear
Liter	5.7
CID	350
Application Notes	GM 8.5 & 8.6 in.; 10 Bolt; Ring and Pinion Set; 4.10 Ratio
Engine VIN Code	R

Make	BUICK
Model	ELECTRA
Submodel	225
Beginning Year	1977
Ending Year	1979
Engine Type	V8
Engine Size	6.6L/403
Engine Family	Oldsmobile V8
Axle Location	Rear
Liter	6.6
CID	403
Application Notes	GM 8.5 & 8.6 in.; 10 Bolt; Ring and Pinion Set; 4.10 Ratio
Engine VIN Code	K

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USA Standard Gear Ring and Pinion Sets ZG GM8.5-411 Gear, 4.11:1 Ratio, GM, 8.5 in./8.6 in., Rear, Set

USA Standard Gear Ring and Pinion Sets ZG GM8.5-411 Gear, 4.11:1 Ratio, GM, 8.5 in./8.6 in., Rear, Set

Description

Part Type

Specifications

Reference Information

Compatibility

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