NOS GM Engine Oil Cooler Hose Connector – Part #12554952
Description:
NOS GM Engine Oil Cooler Hose Connector – Part #12554952
Restore your GM diesel platform with this NOS GM oil cooler hose connector, part number 12554952, designed to fit 1997–1999 Chevrolet and GMC vans equipped with the 6.5L diesel engine. This hardened steel fitting ensures leak-free performance and OEM-correct plumbing for your engine’s oil cooler system.
✅ GM Factory-Sealed Packaging – Includes “UNOPENED” label ✅ OEM-Grade – Superseded by GM #15027502 ✅ Thread Spec – 1/2-14 NPT with retainer clip #88960976
🚗 Confirmed Fitment Applications
This connector fits GM vehicles equipped with the 6.5L diesel engine and factory oil cooler systems:
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1997–1999 Chevrolet Express Van
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1997–1999 GMC Savana
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GM B7 chassis with 6.5L (L65) diesel
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Other GM heavy-duty platforms with external oil cooler plumbing
Always confirm fitment using VIN or OEM catalog.
📊 GM Connector Specification Chart — Part #12554952
| Attribute | Value |
|---|---|
| GM Part Number | 12554952 (superseded by 15027502) |
| Description | Connector, Engine Oil Cooler Hose |
| Function | Connects oil cooler hose to engine block or radiator |
| Thread Size | 1/2-14 NPT |
| Retainer Clip Required | GM #88960976 (blue) |
| Dimensions | 2.4" × 1.8" × 1.4" |
| Weight | 0.50 lbs |
| Material | Hardened steel alloy |
| Country of Origin | USA |
| Condition | NOS (New Old Stock) |
| Packaging | GM-labeled bag with “UNOPENED” seal |
🔧 Fits GM B7 chassis, Express/Savana vans, and more.
