BigHead® Wastegate Actuator - 99.5-03

Part Number:
24401

Manufacturer:

$243.33
$219.00
(You save $24.33 )
(15 reviews) Write a Review
UPC:
801279244016
BigHead® Wastegate Actuator - 99.5-03

When turbo exhaust backpressure increases, the stock actuator prematurely blows off the seat, softening boost 
in the midrange and killing torque. With twice the diaphragm area and spring pressure of the stock wastegate, 
Banks BigHead Wastegate Actuator keeps the valve seated longer and achieves a higher peak boost, sooner. 
At peak, BigHead opens the wastegate and holds its position, for precise boost control that gives 
you crisp acceleration and more mid-range pulling power. 

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  • 2
    Not sure if this is safe or not

    Posted by john on Jan 24th 2025

    It takes over 30psi to activate this diaphragm in this actuator ... is that safe? Would you be better of just welding the waste gate shut at that point? I bought one of these and it is sitting on the shelf collecting dust. I went with one [kinugawa] that you can change the spring in it to adjust the open up pressure you want.

  • 5
    Awesome

    Posted by Steven Henderson on Mar 1st 2024

    This big head turbo waste gate really woke my old truck up. Before I could only get about 8-10psi boost. Ow I’m getting 17-19psi boost at WOT.

  • 5
    Banks Big Head

    Posted by Justin on Aug 19th 2021

    Yes! this thing is king for how small of an upgrade or needed replacement it is.

  • 5
    AWESOME PRODUCT!

    Posted by Scott S. on Dec 21st 2020

    Easy install and noticable difference from stock.

  • 5
    Banks Big Head Wastegate Actuator

    Posted by Robert Ordal on Jul 5th 2020

    Came with instructions and all parts required, even the tiny c-clip.

  • 5
    Banks Big Head

    Posted by Rick on Apr 4th 2020

    You want that turbo to boost. This will Give it.

  • 4
    Big head waste gate actuator

    Posted by Bruce on Dec 27th 2019

    Got rid of the cold morning surging , truck pulls better at mid range

  • 5
    Big Head Wastegate Actuator

    Posted by Cole on Oct 30th 2019

    Always quality stuff from Riff Raff, and easy install with the turbo out

  • 5
    Banks BigHead

    Posted by Jonathan Lo on Jul 5th 2019

    Installation was a breeze since I already had my turbo off (for WW2 install). Preloaded the actuator to the suggested amount. Prior to doing the WW2 and BigHead upgrades, I had put in a Hydra and 4" exhaust. I would notice when I hit about 12lbs of boost, my stock wastegate would start to shudder. With this one, not even close. With the upgrades I've done (Hydra, WW2, BigHead, MBRP Turbo back 4" exhaust, FRX, HPX) I went from topping out at about 18lbs of boost to maxing out at approximately 25psi before my check engine light comes on and the MAF signals to defuel. About $2k worth of upgrades, but definitely worth it.

    Riffraff always provides super quick shipping and awesome customer service!