Description
Genuine GM 12675428 Oil Cooler to Rear Cover Coolant Elbow Adapter, designed specifically for 2020–2025 Silverado and Sierra HD 2500/3500 6.6L L5P Duramax models. This precision-machined OEM elbow connects the engine oil cooler to the rear engine cover and ensures proper coolant flow between the components.
Whether you’re doing an OEM replacement or retrofitting the updated 2020+ L5P oil cooler (GM #12738896) onto earlier Duramax models, this adapter is required for proper installation. Built to GM’s high standards for fitment and durability.
Features:
– Genuine GM OEM Quality – Not an aftermarket part
– Required for retrofitting L5P Oil Cooler onto 2001–2019 Duramax models
– Connects oil cooler to rear engine cover
– High-quality construction ensures leak-free performance
– Trusted by diesel mechanics and performance shops
Compatibility:
2020–2025 Chevy Silverado 2500HD / 3500HD 6.6L L5P Duramax
2020–2025 GMC Sierra 2500HD / 3500HD 6.6L L5P Duramax
**Required when installing 2020+ L5P Oil Cooler on 2001–2019 Duramax trucks**
Important Note: Gaskets and mounting hardware are not included. Use in conjunction with GM Oil Cooler part number 12738896.
OEM Part Number: 12675428
UPC: 195491177000
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