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It comes down to people. It's having someone on the other end of the phone who knows what you are talking about. Someone on the other end of the phone who knows you, your business and your rebuilding habits. Someone who can update you on the latest rebuilding trends on the unit your working on. Someone who cares. Some one who can actually provide service NATPRO is proud of our sales and customer service staff. The hundreds of years of combined experience makes your job easier. Isn't that what service is?

We have always understood that shops can't rebuild transmissions with back-ordered parts. That's why we have always had the industry's highest fill rate. We invest in inventory at much higher than standard industry levels. It seems as though "NATPRO always has it" when you need it. A deep inventory is as much a cornerstone of our basic philosophy as quality is. We know that our customers depend on us.

Our customers have come to trust the parts they get from NATPRO. They trust the quality and they trust the consistency. We don't search out the cheapest part and buy accordingly. You don't need the comebacks. Instead we look for quality and value, same as you. This philosophy leads to a consistent and quality focused parts line. You know that you are going to get quality parts from NATPRO time after time. Consistent quality - a NATPRO hallmark.

NATPRO is a highly successful and productive transmission parts wholesale distributor. We provide the highest quality parts, industry-leading technical support and unparalleled service to our quality conscious customers. Our goal is to provide total customer satisfaction and value. No asset is more valuable to a company than a satisfied customer. If we have done our jobs well our success will be measured not only by the bottom line but also by the number of lasting relationships we have developed with our customers

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Part # 57825
6T70 / 6F50 Rear Cover w/Ring Tower

Part # 57804
6T70 / 6F50 4-5-6 Clutch Drum (w/Input Shaft)

Part # 14846E
U151 / U250E Direct/Overdrive Housing/Piston *Not Included In Kits, Order Seperatly

Part # K76895L / J
ZF5HP19 Also Available for ZF5HP24 Pump Body with Bushing, Seal, and Gears Included.

Part # K77869H or -A
722.6 Harness Plate w/ Speed Sensor Available OEM and Aftermarket

Part # 57875
6T70/75 Input Speed Sensor Located in the Rear Cover.

Part # K62879C-CB
TEHCM Tcm, and Solenoid Assmebly For 6L80/90

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Our Values

Our Promise

For over 40 years we have been known as the company with the best parts. We have always been "the quality" company. While other suppliers have made their own parts or looked for the cheapest parts, NATPRO has always brought in the best parts, OEM where they are available. Quality parts, outstanding customer service, technical support and respect for our customers' business are the cornerstones of our company and our values.

Our mission is to build total customer satisfaction. In order to do so we feature quality parts, inventory, capable and knowledgeable customer service and professional technical support. If we are successful in our mission, we will help your shop be successful in yours

There have been bigger companies, cheaper companies, and now, many out of business companies. Companies that zigged and zagged, responding to the latest "trends", changing their philosophy's, product line, pricing and ownership. Through all this NATPRO has stayed consistent. We have found that we can respond to changes within the industry, and make changes within our company, without changing how we do business. When NATPRO Started in 1973, shops wanted good parts, value, a little help with new units and a company they could trust. they still do and we still provide it. Thats our Promise