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

1967-72 Chevy & GMC Truck • 1/2 Ton 3/4 Ton
1967-72 Chevy & GMC Blazer, Jimmy, Suburban

Axle Shaft Specifications 34-2780 Rear Axle Shaft 30 Spline x 30-3/4" OL 6 Lug 12 Bolt x 8-7/8" Ring Gear 2/4WD 34-2782 Rear Axle Shaft 30 Spline x 31-9/32" OL 6 Lug 12 Bolt x 8-7/8" Ring Gear 2/4WD 34-2784 Rear Axle Shaft 30 Spline x 31-5/16" OL 5 Lug 12 Bolt x 8-7/8" Ring Gear 2WD

Professional Installation Recommended

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
1	32-9020	Ring & Pinion Assembly-3.08	Series 3	Required Quantity: (1)	$189.95	Availability: In stock	Qty: Qty:
	32-9022	Ring & Pinion Assembly-3.42	Series 3	Required Quantity: (1)	$204.95	Availability: In stock	Qty: Qty:
	32-9021	Ring & Pinion Assembly-3.73	Series 4	Required Quantity: (1)	$229.95	Availability: In stock	Qty: Qty:
	32-9023	Ring & Pinion Assembly-4.11	Series 4	Required Quantity: (1)	$204.95	Availability: In stock	Qty: Qty:
2	34-0555	Master Kit	1/2 Ton 67-72	Required Quantity: (1)	$99.95	Availability: In stock	Qty: Qty:
3	34-0551	Bearing Kit	1/2 Ton 67-72	Required Quantity: (1)	$78.95	Availability: In stock	Qty: Qty:
4	32-9080	Internal Kit-30 Spline	1/2 Ton 67-72	Required Quantity: (1)	$119.95	Availability: In stock	Qty: Qty:
5	34-2780	Rear Axle Shaft-30 Spline	1/2 Ton 67-69	Required Quantity: (2)	$129.95	Availability: In stock	Qty: Qty:
	34-2782	Rear Axle Shaft-30 Spline	2 Wheel Drive 1/2 Ton 70	Required Quantity: (2)	$109.95	Availability: In stock	Qty: Qty:
	34-2784	Rear Axle Shaft-30 Spline	2 Wheel Drive 1/2 Ton 71-72	Required Quantity: (2)	$89.95	Availability: In stock	Qty: Qty:
	34-2782	Rear Axle Shaft-30 Spline	4 Wheel Drive 1/2 Ton 70-72	Required Quantity: (2)	$109.95	Availability: In stock	Qty: Qty:
6	30-1614	Lock Clip-Axle	1/2 Ton 67-72	Required Quantity: (2)	$3.95	Availability: In stock	Qty: Qty:
7	34-0520	Rear Wheel Bearing	1/2 Ton 67-72	Required Quantity: (2)	$9.95	Availability: In stock	Qty: Qty:
8	34-0150	Rear Wheel Oil Seal	1/2 Ton 67-72	Required Quantity: (2)	$1.95	Availability: In stock	Qty: Qty:
9	30-0890	Nut-Pinion	1/2 Ton 67-72	Required Quantity: (1)	$5.65	Availability: In stock	Qty: Qty:
10	30-0687	Washer	1/2 Ton 67-72	Required Quantity: (1)	$4.95	Availability: In stock	Qty: Qty:
11	34-5122	Pinion Yoke	1/2 Ton 71-72	Required Quantity: (1)	$119.95	Availability: In stock	Qty: Qty:
12	34-0154	Pinion Oil Seal	1/2 Ton 67-72	Required Quantity: (1)	$2.95	Availability: In stock	Qty: Qty:
13	34-0462	Pinion Bearing-Front	1/2 Ton 67-72	Required Quantity: (1)	$14.95	Availability: In stock	Qty: Qty:
14	30-2916	Spacer-Bearing	1/2 Ton 67-72	Required Quantity: (1)	$6.95	Availability: In stock	Qty: Qty:
15	34-0466	Pinion Bearing-Rear	1/2 Ton 67-72	Required Quantity: (1)	$24.95	Availability: In stock	Qty: Qty:
16	30-4354	Gasket-Cover	1/2 Ton 67-72	Required Quantity: (1)	$5.55	Availability: In stock	Qty: Qty:
17	38-1806	Rear Cover-Chrome-12 Bolt	1/2 Ton 67-72	Required Quantity: (1)	$19.95	Availability: In stock	Qty: Qty:
18	30-2543	Bolt Set-Cover-Chrome	1/2 Ton 67-72	Required Quantity: (1)	$6.95	Availability: In stock	Qty: Qty:

California Residents: Prop 65 Warning

Vehicle application

Includes Parts for the Following Models:

Chevy Models

C10 Pickup (1967, 1968, 1969, 1970, 1971, 1972)
Suburban 2WD (1967, 1968, 1969, 1970, 1971, 1972)
Suburban 4WD (1967, 1968, 1969, 1970, 1971, 1972)
K10 Pickup (1967, 1968, 1969, 1970, 1971, 1972)
Blazer 2WD (1970, 1971, 1972)
Blazer 4WD (1969, 1970, 1971, 1972)

GMC Models

Jimmy 2WD (1970, 1971, 1972)
Jimmy 4WD (1970, 1971, 1972)
C15 Pickup (1967, 1968, 1969, 1970, 1971, 1972)
Suburban 2WD (1967, 1968, 1969, 1970, 1971, 1972)
Suburban 4WD (1967, 1968, 1969, 1970, 1971, 1972)
K15 Pickup (1967, 1968, 1969, 1970, 1971, 1972)

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	Part	Description	Application	Required quantity	Price		Stock status	Qty

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Rear Differential - 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