Differential Ring and Pinion (12 Bolt)
12BC342 Application Notes
- For GM 8.875" (12 Bolt)
- 3.42 Ratio
- Requires a 3.07 to 3.73 Ratio Carrier
Warranty
1 Year or 50,000 Miles
12BC342 Specifications
App Model
GM 8.875 Car
Cover Bolt Quantity
12
Differential Carrier Break
3.07 to 3.73 Ratio
Differential Case Design Type
GM 8.875 Car
Gear Ratio
3.42
Pinion Gear Tooth Quantity
12
Pinion Shaft Diameter
1.625 (Inch)
Pinion Spline Count
30
Ring Gear Bolt Quantity
12
Ring Gear Material
8620 Steel
Ring Gear Outside Diameter
8.875 (Inch)
Ring Gear Rotation
Standard
Ring Gear Tooth Quantity
41
Taxonomy A
LD Differential, LD Differential, LD Differential
Taxonomy B
Ring and Pinion, Ring and Pinion, Ring and Pinion
Taxonomy C
Rear, Rear, Rear
Taxonomy D
3.42, 3.42, 3.42
Vehicle Applications
- 1971 – 1972 Buick Centurion
- 1965 – 1972 Buick Electra
- 1971 – 1972 Buick Estate Wagon
- 1970 – 1972 Buick GS
- 1968 – 1969 Buick GS 350
- 1968 – 1969 Buick GS 400
- 1970 – 1972 Buick GS 455
- 1965 – 1967 Buick Gran Sport
- 1971 – 1972 Buick LeSabre
- 1971 – 1972 Buick Skylark
- 1965 – 1969 Buick Special
- 1964 – 1972 Buick Sportwagon
- 1965 – 1970 Chevrolet Bel Air
- 1967 – 1972 Chevrolet Camaro
- 1966 – 1972 Chevrolet Caprice
- 1964 – 1973 Chevrolet Chevelle
- 1965 – 1968 Chevrolet Chevy II
- 1965 – 1972 Chevrolet El Camino
- 1965 – 1972 Chevrolet Impala
- 1965 – 1967 Chevrolet Malibu
- 1970 – 1972 Chevrolet Monte Carlo
- 1969 – 1972 Chevrolet Nova
- 1970 – 1972 Ford Royal
- 1971 – 1972 GMC Sprint
- 1971 Oldsmobile 442
- 1965 – 1972 Oldsmobile 98
- 1971 – 1972 Oldsmobile Cutlass
- 1971 – 1972 Oldsmobile Cutlass Supreme
- 1967 – 1968 Oldsmobile Delmont 88
- 1965 – 1972 Oldsmobile Delta 88
- 1965 – 1972 Oldsmobile F85
- 1965 – 1966 Oldsmobile Jetstar 88
- 1965 Oldsmobile Jetstar I
- 1965 – 1966 Oldsmobile Starfire
- 1967 – 1972 Oldsmobile Vista Cruiser
- 1965 – 1971 Pontiac Acadian
- 1965 – 1969 Pontiac Beaumont
- 1965 – 1972 Pontiac Bonneville
- 1965 – 1972 Pontiac Catalina
- 1967 – 1970 Pontiac Executive
- 1967 – 1972 Pontiac Firebird
- 1965 – 1972 Pontiac GTO
- 1970 – 1972 Pontiac Grand Prix
- 1971 – 1972 Pontiac Grand Safari
- 1971 – 1972 Pontiac Grandville
- 1965 – 1972 Pontiac Laurentian
- 1965 – 1972 Pontiac LeMans
- 1965 – 1972 Pontiac Parisienne
- 1965 – 1970 Pontiac Strato-Chief
- 1970 Pontiac Tempest
