BMW Engine Valve Spring Retainer Keeper

TRW, headquartered in Cleveland, Ohio, is an American corporation founded in 1901 under the name Cleveland Cap Screw Co. Initially producing connectors and fittings for light machinery and automobiles, the company entered the automobile valves market in 1904, rapidly gaining a reputation as the leading manufacturer in the industry.

After Charles Thompson became the GM of the company in 1926, Cleveland Cap Screw Co was renamed Thompson Products. During World War II, Thompson Products became a key manufacturer of aircraft engine parts, employing over 16,000 workers at its peak.

In 1958, Thompson Products merged with the Ramo-Wooldridge company, forming Thompson Ramo Wooldridge, commonly known as TRW. In 1965, the company officially adopted the TRW name.

By 1986, TRW had a workforce of over 120,000 employees across 25 countries and was ranked #57 on the Fortune 500 list. In 2015, TRW was acquired by ZF Aftermarket.

TRW is renowned for its production of OE quality aftermarket parts for commercial vehicles, motorcycles, and automobiles. Their product range includes braking systems, steering and suspension parts, commercial vehicle components, and service tools.

With a commitment to investing more than 6% of sales into R&D, TRW continuously develops innovative parts that enhance the safety of passenger cars and commercial vehicles. Their innovative products include the electric park brake, head protection for convertibles, and the First Lane-Keeping System.

Throughout its century-long history, TRW has received numerous accolades for exceptional product design and innovation in the aerospace and space exploration field.

TRW's 100+ years of experience in manufacturing aftermarket parts has established them as not just one of the most trusted auto part brands globally, but the foremost manufacturer offering only the highest quality components.