Supertech valve springs offer significantly higher spring rates than factory B46 components

reducing the risk of bolt failure in tuned and turbocharged engines

Emissions Notice:

MAR-M alloy turbine wheel (rated up to 1050°C)

Mishimoto also incorporated internal cooling fins to maximize cooling power to maintain proper transmission temperatures

Precision Turbo Next Gen 73.9-85 Class Legal Turbine Housing - A/R:Sportsman T4 Divided 4-Bolt - 1.28 A/R Supertech valve springs offer significantlyThe Precision Turbo Next Gen R 73. 9 is a race proven evolution of the original 73. 9mm turbo that currently holds the xFWD world record at 7. 69 @ 188mph. Now updated with a new compressor wheel and redesigned compressor cover, the R version delivers over 10% more horsepower than its predecessor and its fully legal for xFWD and Super Street competition. This turbo is engineered specifically for the extreme demands of front wheel drive drag racing,