
ACDelcoExtension Housing
Part #: D121770BA $1,687.68 
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Description & Specs
- Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
- GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
- GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
- GM regularly updates production and service part designs to integrate new materials and technologies
Extension Housing; Updated with added Webbings
| Name | Specs | 
|---|---|
| ACD Reman Description | No | 
| Configuration | Multi Piece | 
| Country of Origin (Primary) | US | 
| Dimension Height | 10.25 | 
| Dimension Length | 16.12 | 
| Dimension UOM | Inches | 
| Dimension Width | 13.12 | 
| Grade Type | REGULAR | 
| GTIN | 60707773291261 | 
| GTIN Qualifier | UP | 
| Hazardous Material Code | N | 
| Height | 10.25in | 
| Length | 16.12in | 
| Life Cycle Status Code | 4 | 
| Maximum Cases per Pallet Layer | 9 | 
| Minimum Order Quantity | 1 | 
| Minimum Order UOM | EA | 
| Mkt State Warranty CA | 12 Months / 20,000 Kilometers (Parts Only) | 
| Mkt State Warranty US | 24 Month / Unlimited Mile Limited Warranty (Parts Only). Please see ACDelco.com for more details. | 
| Mounting Hardware Included | No | 
| National Popularity Code | D | 
| Package UOM | Palette | 
| Pallet Layer Maximum | 3 | 
| Quantity Of Eaches | 27 | 
| Quantity Per Appl Qualifier | MAX | 
| Quantity Per Application | 1 | 
| Quantity Per Application UOM | EA | 
| Quantity Per UOM | 27 | 
| Return Code | Y | 
| Vintage_Part_Indicator | N | 
| Weight | 456.4 | 
| Weight UOM | Pounds | 
| Width | 13.12in | 
Transmissions
| Name | Years | 
|---|---|
| 1000/M74 | 2001 - 2006 | 
| 1000 | 2003 - 2018 | 
Vehicle Fitment
| Years | Vehicle | Drive Types | 
|---|---|---|
| 2007 - 2018 | Chevrolet Silverado 3500 HD | 4WD | 
| 2007 - 2007 | Chevrolet Silverado 3500 Classic | 4WD | 
| 2001 - 2006 | Chevrolet Silverado 3500 | 4WD | 
| 2007 - 2007 | Chevrolet Silverado 2500 HD Classic | 4WD | 
| 2001 - 2018 | Chevrolet Silverado 2500 HD | 4WD | 
| 2007 - 2018 | GMC Sierra 3500 HD | 4WD | 
| 2007 - 2007 | GMC Sierra 3500 Classic | 4WD | 
| 2001 - 2006 | GMC Sierra 3500 | 4WD | 
| 2007 - 2007 | GMC Sierra 2500 HD Classic | 4WD | 
| 2001 - 2018 | GMC Sierra 2500 HD | 4WD | 
| 2006 - 2006 | Hummer H1 | 4WD | 





