PMO Heater Block-Off Plate Left for Porsche 911 (PM-O502-0)
PMO

PMO Heater Block-Off Plate — Left Hand, Single Plate | Air-Cooled Porsche Flat-Six (PM-O502-0)

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$133.33
Product details
  • Vendor PMO
  • SKU PM-O502-0
  • Barcode 707924557077
  • Fits
    • All Years|Porsche|911
    • All Years|Porsche|912

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Description Shipping information Reviews

Pulling the heat exchangers for a track build, a hot-rod engine, or a header setup leaves two open ports on the engine that need closing off properly. The PMO Heater Block-Off Plate, Left (PM-O502-0) seals the left-hand side cleanly — machined to the correct flange pattern instead of a shop-made piece of sheet that never quite sits flat.

Features

  • Left-hand plate, made to the correct flange and bolt pattern — no drilling or fettling.
  • Closes off the heater port when heat exchangers are removed for headers or a race setup.
  • Finished to look right in an engine bay that will be photographed and judged.
  • Pairs with the right-hand plate (PM-O501-0), or buy both together as the set (PM-O503-0).

Fitment

Confirmed: Air-cooled Porsche flat-six engines running heater block-off in place of heat exchangers — left-hand side.

Note: this listing is the left plate only. Most engines need both sides — add PM-O501-0 for the right, or order the complete set as PM-O503-0. Removing heat exchangers eliminates cabin heat and defrost; confirm that suits how the car will be used and registered.

Specifications

  • Part number: PM-O502-0
  • Side: Left
  • Sold as: single plate
  • UPC: 707924557077
  • Country of origin: China
  • Shipping weight: 0.66 lb
  • Boxed dimensions: 11 x 10 x 3.5 in

Questions & Answers

  • Does this include both sides? No — this is the left plate only. The right is PM-O501-0; the complete set is PM-O503-0.
  • What is a heater block-off plate for? It seals the heater port on the engine when heat exchangers are removed, typically for headers or a race build.
  • Will I lose cabin heat? Yes — removing heat exchangers removes cabin heat and defrost.
  • What's the part number? PM-O502-0.
  • Are you an authorized dealer? Yes — Washburn's Metal is an authorized PMO dealer.

⚠️ WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.