O-ring seals for charge pipes

hardparker

Specialist
Jan 23, 2018
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Ride
f25
I've had some minor boost leak issues in the past that I've vanquished by replacing all of the pressurized OEM charge pipe seals with o-rings.

A buddy first put forward replacing the charge pipe to throttle body o-ring with a larger o-ring. I figured I'd share this for the rest of those who want to replace the rest of the OEM seals with better sealing, inexpensive, non-directional o-rings. The grand total of this setup is $3.00, plus $7 for two day shipping, so $10 altogether. I've boost leak tested it up to 30 psi without any leaks.

Be warned that installing fresh o-rings requires significantly more effort. After they've been installed for a while, they form to the seal path better and are easier to reinstall. That first time is a real pain, but it can be done. Be sure to lightly grease both the o-ring and the sealing surface that it'll be sliding onto.

These are the largest cross section o-rings I've been able to fit. Hope this makes all of your boost leaks go bye bye, too.

Turbo outlet: 1 - 4.5mm X 49mm - $.98

Throttle body: 1 - 4mm x 81mm - $.90

Intercooler: 2 - 4mm x 59mm - 1.12$