DHD 077-0243 Duramax Diesel Brass Fuel Test Port Cap W/NPT Ports
The DHD brass fuel test port cap is the same as our standard cap, but this cap has three 1/8 NPT ports. These ports are equally spaced and can be used to fuel pressure gauge connections.
Related O-Ring: 94011618
Replaces OE Cold Start Valve Test Port # 12637722
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