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1973-81 Rear Differential - GM 12 Bolt with 8-7/8" Ring Gear and 30 Spline Pinion

Kit components may vary from illustration depending on your truck's model.

How to choose the correct Ring & Pinion: Each ring and pinion gear set sold below is for replacement use only. Gear ratio changes are possible as long as the ratio selected is within the range of ratios available for the carrier. See chart below for carrier/case breaks by differential model. Truck 12 Bolt Series 2 = 2.73 - down (smaller numerically) Series 3 = 2.76 - 3.42 Series 4 = 3.73 - up (larger numerically)

Full Parts List

	Part	Description	Application	Required quantity	Price	Stock status	Qty
1973-81 STD Cab 1/2 Ton
1	34-2784	Axle Shaft-30 Spline	2 Wheel Drive 1/2 Ton 73-81	Required Quantity: (2)	$89.95	Availability: In stock	Qty: Qty:
	34-2782	Axle Shaft-30 Spline	4 Wheel Drive 1/2 Ton 73-81	Required Quantity: (2)	$109.95	Availability: In stock	Qty: Qty:
2	30-1614	Lock Clip-Axle	1/2 Ton 73-81	Required Quantity: (2)	$3.95	Availability: In stock	Qty: Qty:
3	34-0520	Rear Wheel Bearing	1/2 Ton 73-81	Required Quantity: (2)	$9.95	Availability: In stock	Qty: Qty:
4	34-0150	Rear Wheel Oil Seal	1/2 Ton 73-81	Required Quantity: (2)	$1.95	Availability: In stock	Qty: Qty:
5	38-1806	Differential Cover-Chrome	1/2 Ton 73-81	Required Quantity: (1)	$19.95	Availability: In stock	Qty: Qty:
6	30-4354	Gasket-Cover	1/2 Ton 73-81	Required Quantity: (1)	$5.55	Availability: In stock	Qty: Qty:
7	30-2543	Bolt Set-Chrome	1/2 Ton 73-81	Required Quantity: (1)	$6.95	Availability: In stock	Qty: Qty:
8	34-0555	Differential Master Kit	1/2 Ton 73-81	Required Quantity: (1)	$99.95	Availability: In stock	Qty: Qty:
9	34-0551	Differential Bearing Kit	1/2 Ton 73-81	Required Quantity: (1)	$78.95	Availability: In stock	Qty: Qty:
10	34-0491	Side Bearing	1/2 Ton 73-81	Required Quantity: (2)	$14.95	Availability: In stock	Qty: Qty:
11	30-0280	Ring Gear Bolt	1/2 Ton 73-81	Required Quantity: (12)	$1.25	Availability: In stock	Qty: Qty:
12	32-9080	Internal Kit-30 Spline "A"	1/2 Ton 73-81	Required Quantity: (1)	$119.95	Availability: In stock	Qty: Qty:
	"A" Fits models without positraction or limited slip differentials.
1973-81 STD Cab 1/2 Ton
13	34-5150	Pinion Shaft "A"	1/2 Ton 73-81	Required Quantity: (1)	$10.95	Availability: In stock	Qty: Qty:
	"A" Fits models without positraction or limited slip differentials.
14	32-9050	Pinion Gear "A"	1/2 Ton 73-81	Required Quantity: (2)	$25.75	Availability: In stock	Qty: Qty:
	"A" Fits models without positraction or limited slip differentials.
15	30-0614	Washer "A"	1/2 Ton 73-81	Required Quantity: (2)	$4.95	Availability: In stock	Qty: Qty:
	"A" Fits models without positraction or limited slip differentials.
16	30-0613	Washer "A"	1/2 Ton 73-81	Required Quantity: (2)	$2.95	Availability: In stock	Qty: Qty:
	"A" Fits models without positraction or limited slip differentials.
17	30-0481	Pinion Shaft Lock Screw	1/2 Ton 73-81	Required Quantity: (1)	$6.95	Availability: In stock	Qty: Qty:
18	32-9020	Ring & Pinion 3.08	1/2 Ton 73-81	Required Quantity: (1)	$189.95	Availability: In stock	Qty: Qty:
	32-9022	Ring & Pinion 3.42	1/2 Ton 73-81	Required Quantity: (1)	$204.95	Availability: In stock	Qty: Qty:
	32-9021	Ring & Pinion 3.73	1/2 Ton 73-81	Required Quantity: (1)	$229.95	Availability: In stock	Qty: Qty:
	32-9023	Ring & Pinion 4.11	1/2 Ton 73-81	Required Quantity: (1)	$204.95	Availability: In stock	Qty: Qty:
19	34-0466	Rear Pinion Bearing	1/2 Ton 73-81	Required Quantity: (1)	$24.95	Availability: In stock	Qty: Qty:
20	30-2916	Spacer	1/2 Ton 73-81	Required Quantity: (1)	$6.95	Availability: In stock	Qty: Qty:
21	34-0462	Front Pinion Bearing	1/2 Ton 73-81	Required Quantity: (1)	$14.95	Availability: In stock	Qty: Qty:
22	34-0154	Pinion Oil Seal	1/2 Ton 73-81	Required Quantity: (1)	$2.95	Availability: In stock	Qty: Qty:
23	34-5122	Yoke	1/2 Ton 73-81	Required Quantity: (1)	$119.95	Availability: In stock	Qty: Qty:
24	30-0687	Washer	1/2 Ton 73-81	Required Quantity: (1)	$4.95	Availability: In stock	Qty: Qty:
25	30-0890	Pinion Nut	1/2 Ton 73-81	Required Quantity: (1)	$5.65	Availability: In stock	Qty: Qty:
26	30-1970	Filler Plug	1/2 Ton 73-81	Required Quantity: (1)	$1.95	Availability: In stock	Qty: Qty:

California Residents: Prop 65 Warning

Vehicle application

Includes Parts for the Following Models:

Chevy Models

C10 Pickup (1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981)
K10 Pickup (1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981)

GMC Models

C15 Pickup (1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981)
K15 Pickup (1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981)

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	Part	Description	Application	Required quantity	Price		Stock status	Qty

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1973-81 Rear Differential - GM 12 Bolt with 8-7/8" Ring Gear and 30 Spline Pinion

Full Parts List

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Vehicle application

Includes Parts for the Following Models:

Chevy Models

GMC Models

Loctite Ready Gasket