Stant 27271 Thermostat Seal for Mercedes-Benz 350SDL (1990–1991)
Mercedes-Benz built its name on cars engineered to last, and its gas and diesel engines from the 1960s through the 1980s often run for hundreds of thousands of miles. On the Mercedes-Benz side, Stant's catalog lists the 27271 for 43 models from 1959 to 1993.
This page is for one model only: the Mercedes-Benz 350SDL. It isn't a wall of every car ever made, just yours.
Model this seal fits
- Mercedes-Benz 350SDL (1990–1991)
- 6-Cyl. 3.5L Diesel: 1990–1991
Help choosing the right seal
The 27271 is a Stant thermostat seal, a molded rubber ring that seals the thermostat or the water outlet (thermostat housing) instead of a flat paper gasket. Its Gates equivalent, Gates 33613, is described as a O-ring seal, about 2.359 in. inside diameter × 2.637 in. outside diameter × 0.14 in. thick. Stant's own description of these seals: no sealer or RTV is needed for a leak-proof seal, and each one is shaped for its application. Stant made a different seal for each housing design, and Don stocks several of them, so check which number your car calls for.
Before you order, match three things: your year, your model, and your engine. Catalogs list fitment by vehicle, but some engines had more than one thermostat housing design over the years. If your old seal is still in hand, compare its size and shape, or just ask Don and Kathy. They'll help you sort it out.
Real people behind the parts
Back in 1997, when almost nobody had a website, Don and Kathy were already selling car parts online. They were the very first web customer of Daniel Comp's Intelligent Network. They've since sold through eBay, Bonanza, and their own site, and kept the sales coming no matter how often the internet changed its rules.
These seals come from Don's own shelves.
Price is $9.95 plus $3.00 for shipping.
Don and Kathy offer a fair deal for this. Buying for a club, a shop, or a whole fleet of project cars? Even better.
To reach them, click the "Don & Kathy Leask" button at the bottom left of any page on donsobsoleteautoparts.com, or email [email protected].