4" Boost Leak Tester for BorgWarner S300 Turbos - S366 S369 SX SXE - Billet Aluminum 30 PSI

Boost leak tester sized for BorgWarner S300-series turbos with a 4" compressor inlet, including the S366, S369, SX and SXE.

Slip the tester into your intake hose, clamp it down, and pressurize the whole intake tract with shop air through the included fitting. Then listen and spray soapy water to find every leak in minutes, with the engine off.

Includes:

• 4" O.D. billet 6061 aluminum end cap
• Liquid-filled stainless 30 PSI boost gauge
• M-type air fitting and tire (Schrader) valve stem, so it works with any shop compressor or tire inflator
• Heavy-duty stainless T-bolt clamps

Signs of a boost leak: loss of power and slow spool, lower fuel economy, check engine lights (P0299 underboost), whooshing or whistling under boost, running rich, and boost gauge fluctuations.

Designed and engineered in the USA by Turbo Boost Leak Testers. BorgWarner® is a trademark of its owner and is used only to show fitment. Not affiliated with or endorsed by them.

Not sure what size you need? See our What Size Do I Need? size chart, or text a photo of your turbo inlet with a tape measure across it to 248-403-8512 and we'll tell you the size.

Lifetime warranty on every component. Designed and engineered in the USA.