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Richmond Gear Ring and Pinion Sets 49-0278-1 GM 8.5/8.6 in. 3.42 Gears Gear, Pinion, 3.42:1 Ratio, GM, in., 10-Bolt, 3 Series, Set

SKU: RMG4902781

Ring and Pinion Gears

Richmond Gear Ring and Pinion Sets 49-0278-1 GM 8.5/8.6 in. 3.42 Gears Gear, Pinion, 3.42:1 Ratio, GM, in., 10-Bolt, 3 Series, Set

SKU: RMG4902781

Ring and Pinion Gears

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A$960.17 A$1,027.31
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.
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Description

IMPORTANT NOTICE: Note for Pistons, Rings, Rotors, Rods and engine internalsUnless otherwise specified, some brands supply brake rotors, pistons, rods and rings separately. In some cases, titles may indicate plural, or 'set' - eg the term “ring set” often refers to the rings for a single piston only. If you’re unsure about what’s included with this product, please contact our team for clarification.(keyword: ring)Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.Reference Information Reference Data (Provide these details to our support team) Brand Name/s Richmond Gear, Excel From Richmond, Excel Ring Pinion And Axle, Richmond StreetFX SKU rmg4902781 SFX Item ID 5500882 Accounting SKU rmg-4902781 Manufacturer SKU 4902781 Manufacturer UPC 698231705674 Alternative References RIC49-0278-1, RMG-4902781

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Ring and Pinion - 3.42 Ratio - 30 Spline Pinion - 3 Series - 8.5 in - GM 10-Bolt - Kit


Data: v2 - Desc: v4.2 - Upd: 2026-10-16 03:21:18

Part Type

3.42 8.5in 10 Bolt GM

Data: v4.2 - Upd: 2026-10-15 12:18:11

Specifications

Gear, Ring and Pinion, 3.42:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, 3 Series, Set

Richmond Gear is the leading manufacturer of professional-quality, high performance ring and pinion sets. The superior quality of these gear sets is the result of years of racing development, outstanding design, and state-of-the-art manufacturing methods. Richmond also offers these gear sets in a lightened version for the weight-conscious enthusiast. Their lightened ring and pinion sets feature an outstanding rotating weight loss of up to 6 lbs., ground pinion threads for trouble-free installation, and a special heat treatment for improved strength.

Product Attributes
BrandRichmond Gear
Manufacturer's Part Number49-0278-1
Part TypeRing and Pinion Gears
Product LineRichmond Gear Ring and Pinion Sets
UPC698231705674
Differential Case Design TypeGM 8.5/8.6 in.
Ring and Pinion Ratio3.42:1
Cover Bolts10
Ring Gear Bolts10
Pinion Spline Count30
Ring Gear RotationStandard
Ring Gear Teeth41
Pinion Gear Teeth12
Ring Gear Diameter (in.)8.500 in.
Pinion Shaft Diameter (in.)1.626 in.
Installation Kit IncludedNo
Cover Gasket IncludedNo
Pinion Shims IncludedNo
Carrier Shims IncludedNo
Crush Sleeve IncludedNo
Pinion Seal IncludedNo
Pinion Nut IncludedNo
Ring Gear Bolts IncludedNo
Head Bearing IncludedNo
Tail Bearing IncludedNo
Carrier Bearings IncludedNo
Axle Seals IncludedNo
Axle Bearings IncludedNo
Differential Cover IncludedNo
Differential Oil IncludedNo
Friction Modifier IncludedNo
Installation DVD IncludedNo
QuantitySold as a set.
Special AttentionWill not work with factory ABS reluctor ring. Must use 2.73:1 or numerically higher ratio carrier.

Reference Information

Brand Name/s Richmond Gear
StreetFX SKU rmg4902781
SFX Item ID 5500882
Supplier Item Code 5500882
Manufacturer SKU 4902781
Manufacturer UPC 698231705674
Alternative References RIC49-0278-1, 10-Bolt

Compatibility

No specific fitment data available for this part. For clarification, please contact us.

Detailed Compatibility


Application Data
MakeBUICK
ModelAPOLLO
SubmodelBASE
Beginning Year1973
Ending Year1974
Engine TypeL6
Engine Size4.1L/250
Engine FamilyCHEVROLET L6 GAS
Axle LocationRear
Liter4.1
CID250
CC4097
Application NotesDifferential Ring and Pinion; For GM 8.5"/8.625" (10 Bolt); 3.42 Ratio; Requires a 2.73 and Numerically Higher Ratio Carrier
Engine VIN CodeD
RegionUSA
MakeBUICK
ModelAPOLLO
SubmodelBASE
Beginning Year1973
Ending Year1974
Engine TypeL6
Engine Size4.1L/250
Engine FamilyCHEVROLET L6 GAS
Axle LocationRear
Liter4.1
CID250
CC4098
Application NotesDifferential Ring and Pinion; For GM 8.5"/8.625" (10 Bolt); 3.42 Ratio; Requires a 2.73 and Numerically Higher Ratio Carrier
Engine VIN CodeD
RegionUSA
MakeBUICK
ModelAPOLLO
SubmodelBASE
Beginning Year1973
Ending Year1974
Engine TypeV8
Engine Size5.7L/350
Engine FamilyBUICK V8 GAS
Axle LocationRear
Liter5.7
CID350
Application NotesDifferential Ring and Pinion; For GM 8.5"/8.625" (10 Bolt); 3.42 Ratio; Requires a 2.73 and Numerically Higher Ratio Carrier
Engine VIN CodeH
RegionUSA

This may not be an exhaustive list of compatible vehicles. Please reach out to one of our representatives if you are unsure or do not see your vehicle here.

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