It is your responsibility to purchase the correct part. Very often there is more than one part available per application as auto makers often switch midyear. eCRATER’s compatibility system does not allow sellers to account for any variations by VIN. If you don’t have the part number, you can get it from any dealership by providing your VIN. This way you can avoid unnecessary hassle and return shipping costs. We provide part numbers and high resolution photos, but if you do not check them we cannot guarantee fitment. Brand New Crankshaft Position / Engine Speed Sensor For 1988-1993 Bmw Restore proper timing to your engine with this new direct replacement Crankshaft Position Sensor the CPS is a key component to your engine's timing and firing system. The Crank Sensor in most vehicles usually uses a magnet to determine the position of the crankshaft and sends the info to the Electronic Control Module (ECM) letting the computer know the position of the engine. A bad or malfunctioning crank sensor will often cause a service engine light error code and or cause a no start condition or rough running due to inaccurate ignition and fuel timing. Manufacturer: AIP Electronics100% New ConstructionHigh Quality OEM Replacement PartFit and Quality GuaranteedReady for Install Straight out of the box 1988-1993 BMW 535i 3.5L w/SCREW-ON TYPE1988 BMW 535is 3.5L w/SCREW-ON TYPE 1987-1989 BMW 635CSi 3.5L 1985-1992 BMW 735i 3.5L1988-1992 BMW 735iL 3.5L Part Note: ENGINE SPEED SENSOR Part Ref#s: 0261210061121417105191214171476312141720853261210061PC2355S1659SU5143 About Us Payment Shipping Returns Contact Us About Us: AIP Electronics Inc. was established in 2005 and has grown to have over 2,000 SKUs available and in stock anytime. At AIP, we focus on providing customers with high quality automotive parts at a competitively low price. To keep prices low for customers, AIP buys parts directly from OEM, OES, and aftermarket manufacturers and sells them directly to the customer. At AIP, customer service ranks at the top of the list. Our warehouse, shipping facility and customer support center are all based in California, offering customers the ability to receive support from one central location. AIP is proud to offer technical assistance for life, as long as of your vehicle utilizes our parts. In the automotive world, speed reigns supreme and AIP aims to get your vehicle back on the road as soon as possible. We offer quick forms of shipping and will ship on the same day if the part is ordered by 3 P.M. PST. AIP offers free shipping to all domestic customers, as well as to select online market websites. For international buyers, AIP is proud to present worldwide shipping. Here at AIP, we provide a 90-day warranty with every part we sell. For new and unused parts, we will provide the customer with a full refund within 90 days of the original purchase date. Parts that are deemed non-functioning can be returned for replacement within 90 days of the original purchase date. Our focus at AIP is to provide customers with low cost quality automotive parts, helpful customer service and the ability to help your vehicle run like new. With thousands of parts in stock we're sure we have the right part for your vehicle to get on the road again.