Creates an air tight seal between the MAF and the air cleaner
For use with the B5 RS4 mass air flow sensor
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
09-04-2026
Keep your air clean and your fuel mileage where it should be
Install new hardware with your new parts. M6x12
Allows your JB4 to control a WMI pump and solenoid for dynamic progressive flow mapping!
For most JB4 applications.
This product was last offered at the strikethrough price on
05-02-2026
Heavy-duty yet compact tank that is compact and flexible allowing for a wide range of mounting on any flat vertical surface in the trunk.
Restore engine performance
Measures the temperature of the air entering the engine
Up to the 2002 model year
Engages water-methanol system at 35PSI Adjustable from 25-50psi
Includes 2.5 gallon tank, red high temp nylon tubing, and quick-connect fittings
Cure the boost leak and restore power
This product was last offered at the strikethrough price on
05-07-2026
Quick connect union T-fitting for 1/4" Nylon
Large breather hose that runs around the intake manifold
10X Entries Into Our F80 M3 Sweepstakes
This product was last offered at the strikethrough price on
05-29-2026
Mounted on the intake manifold
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From the 2003 model year
Multiple line check valve that sits in the back of the intake manifold
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2000-2001 automatic transmission only, 2002 & up all transmission