Crown Automotive Transfer Case Oil Drain Plug

Crown Automotive Transfer Case Oil Drain Plugs: OEM Precision for Jeep 4x4 Systems

When it comes to keeping your Jeep's four-wheel-drive system properly sealed and serviced, few components are as deceptively critical as the transfer case oil drain plug. A failed or missing plug can silently rob your transfer case of lubrication, leading to costly gear damage on the trail or the highway. Crown Automotive has been the go-to source for Jeep drivetrain components since 1963, when they established themselves as the leader in OEM replacement parts for Jeep vehicles.

A Plug Built for Jeep's Demanding Transfer Cases

Crown Automotive's flagship transfer case drain plug — part number 68001627AA — is a steel plug designed for use with the NP231 transfer case, one of the most widely used transfer cases across decades of Jeep production. This plug is compatible with various Jeep models from 1994 to 2019, as well as select Chrysler, Dodge, and Ram vehicles, making it a remarkably versatile maintenance part for a broad swath of the FCA/Stellantis family. Notably, thread locker comes pre-applied, saving time during installation and ensuring a secure, leak-free seal right out of the box.

The plug's wide model compatibility includes iconic nameplates like the Jeep Grand Cherokee (1994–2010) and Jeep Wrangler models spanning 1994, 1995, and 1997 through 2002, with coverage extending well into the modern Wrangler JK and JL generations. Whether you're performing a routine transfer case fluid service or rebuilding a transfer case from scratch, this plug restores factory-spec sealing integrity.

Why Crown Automotive Stands Apart for Transfer Case Components

Because Jeeps are driven harder than most other vehicles, Crown emphasizes quality parts — and they test parts on actual Jeeps before distributing them to ensure they meet their standards. That commitment to real-world validation is especially meaningful for transfer case hardware that faces constant vibration, heat cycling, and the occasional trail impact.

With over 10,000 different part numbers in stock for Jeep vehicles from 1942 on up, Crown carries the largest selection of replacement parts — including factory-discontinued parts. This depth of catalog means that owners of older, harder-to-source Jeep models can still find the exact drain plug their transfer case requires, without resorting to ill-fitting substitutes.

Crown backs its entire line with a 12-month/12,000-mile warranty, giving both DIY mechanics and professional shops confidence that the part will perform as designed. For a small but essential fastener like a drain plug, that warranty reflects the brand's broader philosophy: no part is too minor to deserve OEM-level quality control.

Who Needs This Part?

This drain plug is the right choice for Jeep owners performing a transfer case fluid change — a service recommended every 30,000 miles or more frequently for vehicles that see regular off-road or towing use. It's also essential any time a transfer case is removed, resealed, or rebuilt. Browse all transfer case oil drain plugs to find the right fit for your application, or explore the full Crown Automotive parts catalog for the complete range of Jeep drivetrain components.