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M20 Engine Oil Pressure/Temp Sender Adapter


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CNC machined adapter and mount block for adding oil pressure and temperature senders and gauges to your BMW M20 engine block.  It has a large internal bore for maximum oil flow and accurate sender readings.

The adapter is machined from corrosion-resistant 303 stainless steel and is compatible with M20B20, M20B23, M20B25 and M20B27 engines.

The adapter is used in place of the stock oil pressure switch (OE part # 12618611273) on the lower exhaust side of the engine block.  When used with VDO oil pressure sender, part # 360009, it will maintain the factory function of the oil pressure warning light on the dash.

It will also accept VDO oil temperature sender, part # 323057.  It can hold any other VDO oil pressure or temperature senders with appropriate size and 1/8” NPT mounting threads.

Key features:

  • Precision CNC machined from corrosion-resistant 303 stainless steel
  • Makes adding oil senders and gauges to your E30 easy
  • External hex size of 19mm or 3/4 inch
  • Compatible with both M20B25 and M20B27 engines from the E30 chassis (325e and 325i)
  • Replaces OEM oil pressure switch, part number 12618611273
  • External threads of M12x1.5
  • Internal threads for both sender mount holes are 1/8” NPT (tapered thread)
  • 100% designed and manufactured in the USA
  • Clean, professional appearance
  • When used with two-pole VDO oil pressure sender (part number 360009) maintains stock oil pressure warning light functionality. Is compatible with any other VDO pressure sender with 1/8” NPT mounting threads
  • Accepts VDO oil temperature sender (part number 323057)
  • Requires use of one or two M12 copper or aluminum crush washers and PTFE tape on sender threads (crush washers and PTFE tape not included)
  • Installation instructions included

Additional information

Weight 4 oz
Dimensions 15 × 10 × 3 cm

Sidon River Manufacturing, LLC

Precision CNC machined parts with impeccable quality for the BMW 3 series E30 chassis.

We also do custom work!

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Shipping Policy

We ship all of our products as inexpensively  as possible to the continental US, [generally] through USPS.  Because they are shipped by USPS, we always make sure to package and label them REALLY well.  Extra charges may apply when shipping internationally or outside the continental US.  Thanks for understanding.

Refund Policy

Parts that are undamaged and otherwise unaltered such that their resale value is not diminished and which have been returned within 30 days of the initial purchase will be eligible for a full refund of original purchase price.  Parts that have been damaged or otherwise altered (grinding, scribing, burning, destroying, scratching excessively, etc) to inhibit their resale value will be returned to the customer and will not be refunded. If you are seeking a refund because your purchased merchandise does not function as advertised or is defective in some way (ie we totally screwed it up), we are happy to take returns and issue refunds on a case-by-case basis.  Suffice it to say that we stand by our products and have no intention of irritating you with poorly-made junk.  We want to give you a superior product that meets your expectations.

Cancellation / Return / Exchange Policy

We are happy to cancel any order (free of charge) for merchandise as long as you, our wonderful customer, contacts us before we ship the product out.  Once the product is shipped, our normal return/refund policy takes over.  We thought about offering a service where we chase down the Postman, but it seemed unwise. Parts may be returned via shipping at the buyer's expense within 30 days of purchase.  Once we receive your returned items, they will be inspected to verify that they meet our refund policy before any refund will be issued. If you seek an exchange of merchandise, we are happy to work with you.  Parts that you are returning will be shipped by you, the buyer, back to us.  Once we have verified that they meet our refund policy, we will issue an invoice with the difference between returned and newly purchased merchandise.  Parts that are shipped to or back to you will be subject to our shipping policy.

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