1188 GM Engine Pre-Lube Adapter – 1/4" NPT

Protect a fresh GM build from dry-start wear with the Motive Products 1188 Pre-Lube Adapter. Thread this precision fitting into the factory 1/4" NPT oil-pressure sender port, snap the quick-connect to your Motive PowerFill tank hose, and pressurize the oil galleries before first fire-up. Thirty seconds of priming coats bearings, lifters, cams, and turbo feed lines with clean oil — no starter cranking, no messy funnels required.

Specifications & Features

• Thread Size: 1/4" NPT male — direct fit for GM LS, LT, and select small-block/big-block engines that use a 1/4" NPT sender port
• Stainless Quick-Connect Nipple — mates instantly with any Motive PowerFill or Power Bleeder hose for a leak-free pre-lube connection
• Anodized Aluminum Body — lightweight, corrosion-proof, and safe with all conventional and synthetic engine oils
• Compact Profile — clears tight firewall and intake areas; prime a fully dressed long-block without clearance issues
• Reusable Shop Tool — one adapter serves countless engine builds; essential for machine shops, race teams, and serious DIY builders

How to Use

• Remove the factory sender or plug from the 1/4" NPT port
• Thread in the 1188 adapter hand-tight plus 1/8 turn; do not overtighten
• Attach Motive PowerFill tank hose to the quick-connect nipple
• Fill tank with fresh break-in oil and pump to 20–25 psi
• Hold pressure until oil appears at rocker arms or pushrod tips
• Remove adapter, re-install the factory sender, and start the engine with confidence

Fitment Note

Verify your sender port is 1/4" NPT before ordering. For 1/8" NPT ports use Motive adapter #1144; for 3/8" NPT ports use #1138. All three sizes are available as a bundle in kit #1190.

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