(800) 877-2810
Local (503) 284-2810
4545 NE 148th Ave | Portland, OR 97230

A Family Business

Located in the picturesque and bustling city of Portland, OR, Quality Diesel Parts (QDP), Inc. is a 105 year old (and counting) family-owned and operated business.

We specialize in serving the logging, trucking, construction, industrial, agricultural, and marine industries with diesel parts from leading manufacturers.

About Us

Our History

Our History

Originally led by D.I. Cooper, the Cooper family business has been serving the greater Portland area for over a century. Quality Diesel Parts is now under the leadership of Brian and Ginell Cooper, D.I.’s great grandson and his wife.

This dynamic duo is carrying on the tradition of providing customers with only the best parts and excellent customer service.


Largest Diesel Parts Inventory

Largest Diesel Parts Inventory

Our parts inventory is the largest in our region, and features a wide range of options, including engine parts, kits, pumps, gaskets, exhaust manifolds, bushings, cams, fuel components, coolers, valve trains, seals, and much more. From rebuild kits and cylinder heads, to plugs and a ridiculously large selection of gaskets, we have access to a wide range of products and our website offers easy access to thousands of parts. In addition to our East Portland storefront, we have an ever-evolving online store. You can search for parts, order, and have us ship them anywhere right to your desk, cab, or back-forty.

Expert Staff

Expert Staff

Our expert team of professional hooligans has a combined total of over 50 years of hands-on experience in the diesel engine business. We understand how important customer service, personal attention, and quality performance are to you and your heavy-duty business. Our tenacity and powerful knowledge base is your best plan to get you back on track, fast. With access to a wide range of vendors and diesel engine parts, we are determined to overcome any challenge you may face in finding the right part. In the rare event that we don’t have the part you’re seeking, we are committed to finding it for you. We are certified sleuths when it comes to locating even the most obscure parts!
Quality

Quality


We stock only the highest quality parts from the major brands and manufacturers you know and trust.
Selection

Selection


Our parts inventory is the largest in the Northwest and features a wide range of options.
Experience

Experience


Our expert team of professional hooligans has a combined total of over 50 years of hands-on experience in the diesel engine business.
Quality

Quality


We stock only the highest quality parts from the major brands and manufacturers you know and trust.
Selection

Selection


Our parts inventory is the largest in the Northwest and features a wide range of options.
Experience

Experience


Our expert team of professional hooligans has a combined total of over 50 years of hands-on experience in the diesel engine business.

Address and Hours

Phone: (800) 877-2810
Local: (503) 284-2810
Hours: Mon-Fri 8am-5pm

4545 NE 148th Ave
Portland, OR 97230

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