The ACDelco / GM 89019121 is the OE lower radiator insulator (mount) used on many GM trucks and SUVs, including 2001–2019 Chevrolet Silverado / GMC Sierra 2500 HD and 2001–2006 3500 with the 6.6L Duramax.

Features & Benefits

• OE lower radiator insulator, GM P/N 89019121 (left / right lower)
• GM notes it is also included with the radiator
• Supersedes GM 52481113 and 52486602
• Genuine GM / ACDelco OE part, designed, engineered and tested to GM standards and backed by General Motors

Application

• Chevrolet Silverado / GMC Sierra 2500 HD (2001–2019) and 3500 (2001–2006), incl. 6.6L Duramax diesel
• Also listed for many gas Silverado / Sierra, Tahoe, Suburban, Yukon, Avalanche, Escalade and Rainier models

Always verify fitment by VIN or by matching the GM/ACDelco part number on your original part before ordering.

Cross-Reference / OE Numbers

• GM: 89019121
• Replaces GM: 52481113, 52486602