Ring Gear/Pinion Ring & Pinion Gear Sets from Sierra Gear & Axle are reasonably priced and are the highest quality aftermarket gear sets available. Sierra Gear Ring and Pinion Gear sets are engineered and manufactured for easy setup, quiet operation and long trouble-free life. GM 12 BOLT 4.56 SG GM12T-456 Welcome to Bill’s Auto Parts and Gear Services E Bay store. Thank you for visiting our site. We feel communication is very important. If you need something for a Ford, Jeep, Dodge, Plymouth or Chrysler and now we also have GM car, truck, SUV and minivans, and you do not see it in our listings, message us through E Bay as required and we will make a listing for you. This is a file photo! You will receive what is described in the title and description. If you have any questions please ask before buying. Please DO NOT assume item is exactly as pictured. We will combine shipping on multiple parts when purchased.

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Donor Vehicle   Model CHEVY 10 PICKUP Year 1980 Mileage 0 Miles    (0 = not available or unknown) Stock Number WCD Store Number  5

NOTE: Image(s) shown may be the vehicle from which the part was pulled, or a generic image representing typical stock, rather than the unique item being sold.

Part Detail	(see Help)
Part Grade
Part Category	N
Part Placement
Notes	GM12 BOLT 4.56 SG GM12T-456

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This part will fit these makes and models with these options

BLAZER/JIMMY (full size) 69-77 rear axle, 3.73 thru 4.11 ratios
BLAZER/JIMMY (full size) 78-81 rear axle, 3.73 and 4.11 ratios
CHEVROLET 10 PICKUP 65-72 4x2, 12 bolt cover, 3.73 and 4.11 ratios
CHEVROLET 10 PICKUP 65-80 4x4, rear axle, 3.73 and 4.11 ratios
CHEVROLET 10 PICKUP 73 4x2, w/o 8-454; 3.73 and 4.11 ratios
CHEVROLET 10 PICKUP 74-77 4x2, 3.73 and 4.11 ratios
CHEVROLET 10 PICKUP 78-81 4x2, 12 bolt cover, 3.73 and 4.11 ratios
CHEVROLET 10 PICKUP 81 4x4, rear axle, 12 bolt cover, 3.73 ratio
CHEVROLET FORWARD CONTROL 65-80 10 Series; 3.73 and 4.11 ratios
CHEVROLET VAN 65-71 10 Series; 12 bolt cover, 3.73 and 4.11 ratios
CHEVROLET VAN 67-77 20 Series; 3.73 and 4.11 ratios
CHEVROLET VAN 72 10 Series; 3.73 and 4.11 ratios
CHEVROLET VAN 73 10 Series; w/o 8-350; 3.73 and 4.11 ratios
CHEVROLET VAN 74 10 Series; 3.73 and 4.11 ratios
CHEVROLET VAN 75-81 10 Series; 12 bolt cover, 3.73 and 4.11 ratios
CHEVROLET VAN 78-81 20 Series; 12 bolt cover, 3.73 and 4.11 ratios
GMC 1500 PICKUP 67-68 4x4, rear axle, 12 bolt cover, 3.73 and 4.11 ratios
GMC 1500 PICKUP 67-72 4x2, 12 bolt cover, 3.73 and 4.11 ratios
GMC 1500 PICKUP 69-80 4x4, rear axle, 3.73 and 4.11 ratios
GMC 1500 PICKUP 73 4x2, w/o 8-454; 3.73 and 4.11 ratios
GMC 1500 PICKUP 74-77 4x2, 3.73 and 4.11 ratios
GMC 1500 PICKUP 78-81 4x2, 12 bolt cover, 3.73 and 4.11 ratios
GMC 1500 PICKUP 81 4x4, rear axle, 12 bolt cover, 3.73 and 4.11 ratios
GMC FORWARD CONTROL 65-66 1000 Series; 3.73 and 4.11 ratios
GMC FORWARD CONTROL 67-80 1500 Series; 3.73 and 4.11 ratios
GMC VAN 65-66 1000 Series; 12 bolt cover, 3.73 and 4.11 ratios
GMC VAN 67-71 1500 Series; 12 bolt cover, 3.73 and 4.11 ratios
GMC VAN 67-78 2500 Series; 3.73 and 4.11 ratios
GMC VAN 72 1500 Series; 3.73 and 4.11 ratios
GMC VAN 73 1500 Series; w/o 8-350; 3.73 and 4.11 ratios
GMC VAN 74 1500 Series; 3.73 and 4.11 ratios
GMC VAN 75-81 1500 Series; 12 bolt cover, 3.73 and 4.11 ratios
GMC VAN 79-81 2500 Series; 12 bolt cover, 3.73 and 4.11 ratios
SUBURBAN 10 65-72 4x2, 12 bolt cover, 3.73 and 4.11 ratios
SUBURBAN 10 65-80 4x4, rear axle, 3.73 and 4.11 ratios
SUBURBAN 10 73 4x2, w/o 8-454; 3.73 and 4.11 ratios
SUBURBAN 10 74-77 4x2, 3.73 and 4.11 ratios
SUBURBAN 10 78-81 4x2, 12 bolt cover, 3.73 and 4.11 ratios
SUBURBAN 10 81 4x4, rear axle, 12 bolt cover, 3.73 ratio
SUBURBAN 1500 67-68 4x4, rear axle, 12 bolt cover, 3.73 and 4.11 ratios
SUBURBAN 1500 67-72 4x2, 12 bolt cover, 3.73 and 4.11 ratios
SUBURBAN 1500 69-80 4x4, rear axle, 3.73 and 4.11 ratios
SUBURBAN 1500 73 4x2, w/o 8-454; 3.73 and 4.11 ratios
SUBURBAN 1500 74-77 4x2, 3.73 and 4.11 ratios
SUBURBAN 1500 81 4x2, 12 bolt cover, 3.73 and 4.11 ratios
SUBURBAN 1500 81 4x4, rear axle, 12 bolt cover, 3.73 and 4.11 ratios

Most parts we sell through eBay Motors come with a 90-day money back guarantee unless otherwise stated. The 90 day period starts when you take possession of the part. No labor warranty is provided.

In the event a part sold with a warranty fails to operate within the warranty period we will replace the part(s) with a functionally equivalent part or refund the part purchase price, at our option. No refund on deposits or unwanted special order parts or special "cut" items.

To return an unwanted item you must contact us via email THRU EBAY AS REQUIRED within 7 days from recieving date to obtain a RMA number (return material authorization).

Original shipping charges and return shipping charges are not refunded. On items that are returned for non warranty reasons. Please email any questions.

Once you obtain an RMA number, ship the item back to Bill's Auto Parts 4203 E Weile Ave Spokane, WA 99217 along with the RMA number.

Bill's Auto Parts ships to US addresses within the 48 states only via UPS ground or USPS Priority Mail.

No free shipping to Alaska, Hawaii, Puerto Rico, APO, FPO or PO Box please email us for shipping costs.

No International shipping available for items that weigh over 60lbs. International shipping is done on USPS Priority mail.

Pick up at our facilities is available. Please email us prior to your purchase to arrange pick up.

Items will be shipped within 1-2 days of purchase.

Please allow 5-10 days for deliveryin the US. Most areas in the US are within 5 days. Expedited shipping is available please email with postal code for shipping quote.

If an item arrives damaged, please email us  THRU EBAY AS REQUIRED within 24 hrs for instructions.

We accept immediate payment using a credit card via PayPal only.

Sales tax will be applied to all orders shipped to the state of WA.

Core Charge. Core is an acronym for 'Cash On Return'. A core charge is sometimes applied to rebuildable parts such as engines or alternators that can be redeemed for a portion of their original price. If the part you are purchasing has a core charge applied, it will be noted in the description.

Parts Grading. A standard code system is used to communicate the condition and quality of a part between automotive recyclers, automotive repair shops, and insurers. Knowing how these codes are used will help you understand whether the part meets your expectations before you buy it and what you can expect from the part when you receive it.

A Grade	- The highest quality part. It is of low miles and/or exceptional condition for its age.
B Grade	- The second level quality part. It is of average miles and normal condition for its age.
C Grade	- The third level quality part. It has high miles and/or light damage.
No Grade	- A part that has not yet been graded.

To learn more about Parts Grading click here.

Part Category. A category is a way of classifying a part in inventory. The category appears as a one-letter abbreviation under Part Detail. A category is a way to identify a part by location or condition, and helps to indicate whether a part needs to be pulled and prepped before shipping.

Standard Part Categories include:

Part Category	Description	Definition
U	Unbolted	Used part, loose and unbolted from vehicle.
Y	Yard	Used part, still on vehicle.
N	New	Part manufactured from scratch.
R	Rebuilt	Used part that is rebuilt or reconditioned.
S	Surplus	Used part for which too many are available.

Part Color Definitions

Amber	AMB	Burgundy	BRG	Red	RED
Beige	BEI	Gold	GLD	Silver	SIL
Black	BLK	Gray	GRY	Tan	TAN
Blue	BLU	Green	GRN	Teal	TEA
Bronze	BRZ	Maroon	MRN	White	WHT
Brown	BRN	Purple	PUR	Yellow	YEL

If you have a question about a part please contact us BEFORE purchasing.

Our main contact method is by email. We try to answer all emails within 24 hours.

If we are unable to answer your questions before the listing ends the item will be re-listed again soon for you to purchase.

Please email any questions  THRU EBAY AS REQUIRED "> .