| /

GM Engine Pre-Lube Adapter – 1/8" NPT 

Protect a fresh GM build from “dry-start” wear with the Motive Products GM Pre-Lube Adapter (1/8" NPT, #1188). Thread this billet fitting into the factory oil-pressure sender port, snap the quick-connect to your Motive PowerFill™ or Power Bleeder hose, and pressurize the oil galleries before first fire-up. Thirty seconds of priming coats bearings, lifters, and cams with clean oil—no starter cranking, no messy funnels.

Feature Benefit
1/8" NPT male thread Direct fit for late-model LS, LT, and many small-block/big-block GM engines that relocated the sender to a 1/8" NPT port.
Stainless quick-connect nipple Couples instantly with any Motive hose for leak-free pre-lube or pressure testing.
Anodized aluminum body Lightweight, corrosion-proof, safe for all conventional & synthetic oils.
Compact design Clears tight firewall and intake areas—prime the engine even on a fully dressed long-block.
Reusable shop tool Essential for engine builders, machine shops, race teams, and DIY swaps—one adapter serves countless engines.

How to Use

  1. Remove the factory sender or plug.

  2. Thread in the GM pre-lube adapter (hand-tight + 1/8 turn).

  3. Attach your Motive tank hose, fill with break-in oil, and pump to 20–25 psi.

  4. Watch for pressure on the gauge and oil at rocker arms. Remove, re-install the sender, and you’re ready to light it off with confidence.

Give your crate, rebuild, or LS-swap the best start possible—prime it first with the Motive 1/8" NPT engine pre-lube adapter and drive away worry-free.

Verify port size before ordering. For GM engines with 3/8" NPT sender ports, use Motive adapter #1138.

WARNING: Reproductive Harm - www.P65Warnings.ca.gov