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Catalytic By-Pass Pipe, For 928S (4 Valve) Porsche®, 1984-1986

Catalytic By-Pass Pipe, For 928S (4 Valve) Porsche®, 1984-1986

1984-86 928S Catalytic By-Pass Pipe For Porsche
Part #:
$280.99 ea.
  (No Discount / Limited Discount)
  Alt Part #:
1984 thru 1986
See applications below for exact details.
Shipping Note:
This item has additional shipping charges due to heavy weight or oversize dimensions.

Select a vehicle above or use application chart below to ensure this part fits your vehicle.
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  • This By-Pass Pipe Is Designed For Off Road Or Track Use Only/Check Your Local Laws Before Ordering For Use On The Street
  • Boost Performance By 10%
  • Improve Your Racing Edge
  • Bolt Into Place Without Modifications
  • Photo For Reference Only

Reduce back pressure and lower exhaust temperature also results in less chance of heat damaged oil seals and premature failure of valves and engine bearings, thus increasing reliability. Come complete with all necessary gaskets.


Make / Model Series Body Notes Year
PORSCHE 928 S 4 Valve 1984, 1985, 1986