Secondary Air Injection Block-Off Plate (M52TU/M54) + Gasket
4.5 (1,234)
Sold 100+ last 30 days
20% off first order
$20.00
Color
Black
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Quantity
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Description
Our Secondary Air Injection block-off plate seals the factory secondary-air port on the cylinder head, allowing for removal of the SAI system. Commonly used on vehicles running catless headers or turbocharged setups, where catalyst heating ...