Angry Ass | S38B36 + B38 A/C Compressor Tensioner
Unlike other engines where the A/C compressor is moved to tension the drive belt, the A/C compressor on the S38B36 and B38 used in the E34 M5 is rigidly mounted. To tension the drive belt you have to “walk” the secondary air injection pump along its tensioning bar. Unfortunately the secondary air pumps are failure prone and are no longer available (we are working on a rebuilding service). To solve this issue for those looking to maintain their A/C system and track their E34 M5 or S38B36 + B38 powered car on those hotter track days we have developed this tensioner assembly.
For those who wish to return their car to an OEM configuration the tensioner installation is a completely reversible bolt-on assembly.
ATTENTION: For racing, competition, or other off-road use only!
Unlike other engines where the A/C compressor is moved to tension the drive belt, the A/C compressor on the S38B36 and B38 used in the E34 M5 is rigidly mounted. To tension the drive belt you have to “walk” the secondary air injection pump along its tensioning bar. Unfortunately the secondary air pumps are failure prone and are no longer available (we are working on a rebuilding service). To solve this issue for those looking to maintain their A/C system and track their E34 M5 or S38B36 + B38 powered car on those hotter track days we have developed this tensioner assembly.
For those who wish to return their car to an OEM configuration the tensioner installation is a completely reversible bolt-on assembly.
ATTENTION: For racing, competition, or other off-road use only!
Unlike other engines where the A/C compressor is moved to tension the drive belt, the A/C compressor on the S38B36 and B38 used in the E34 M5 is rigidly mounted. To tension the drive belt you have to “walk” the secondary air injection pump along its tensioning bar. Unfortunately the secondary air pumps are failure prone and are no longer available (we are working on a rebuilding service). To solve this issue for those looking to maintain their A/C system and track their E34 M5 or S38B36 + B38 powered car on those hotter track days we have developed this tensioner assembly.
For those who wish to return their car to an OEM configuration the tensioner installation is a completely reversible bolt-on assembly.
ATTENTION: For racing, competition, or other off-road use only!
Additional Information
Tensioner is CNC machined in the USA and Canada from 6061 aluminum and then vapor honed with ceramic media for a final satin anodized finish in black to MIL-A-8625 Type III .
Pulley and cap are from an OE supplier and easily sourced if needed
OE supplier belt optional
Adjustment wrench that also works on the viscous fan optional
Hardware is OEM BMW or from an OE supplier
