Everything for the Rebuilder

Everything for the Rebuilder. We're a family-owned wholesale distributor of internal engine parts, serving engine rebuilders, machine shops and repair centers across the country. We stock what you need, ship it the same day, and back it with people who know engines.

Our Story... Our tradition started in 1952, when Don Gross, an aircraft mechanic, began a career in the automotive aftermarket. Don worked for several industry leaders and built a sales agency representing names like Nylen, Ertel and Sterling. In 1972 he purchased Steven Motor Parts in Los Angeles and began distributing wholesale engine parts.

From there we grew one location at a time: San Diego in 1982, membership in the Engine Parts Group (the Engine Pro co-op) in 1998, and a third California distribution point in Riverside in 2015.

In 2021 we doubled in size by acquiring Sterling Bearing, Inc., a respected warehouse distributor with locations in the Midwest, Northeast and Southeast. Sterling brought a long engine heritage of its own: it began in 1936 reconditioning babbitted connecting rods, later remanufactured crankshafts, and in 1975 introduced BLOCKMASTER, one of the first engine kits in the USA.

Today we operate seven engine-parts specialty warehouses across four time zones.

Our People... Our team of about 50 brings decades of hands-on experience, from looking up parts to building all kinds of engines. Many of our people speak Spanish. And if we don't know an answer, we'll find it.

Our Inventory... We carry internal engine parts in over 100 brands for domestic, import, diesel, heavy duty, marine, agricultural, industrial and high-performance engines, plus our own Engine Pro line and a full range of shop supplies. If it's not on our shelf, we'll source it for you. Let us find the parts while you focus on building engines.

Support for Your Shop... We offer merchandising tools to help you sell, including posters, flyers and catalogs, along with technical bulletins and help with engine shipping.