John Wood 4R100 Valve Body 7.3L Powerstroke 1996-2003
We offer modified valve bodies from John Wood Automotive because it is our experience that they are one of the best offered in the industry. John Wood has been building transmissions and valve bodies since 1983 and has a reputation for strong attention to detail, quality before quantity and excellent customer service.
A JW Valve Body will help to firm up shifting, while keeping the shifts crisp and not banging into gear. Also performs shorter shift duration, which decreases heat generated and reduces slippage and wear on the friction plates. While the valve body can be used with stock programming, we suggest a PHP Hydra if you are thinking of upgrading.
Please note that there is a 4 week window for core returns from when you receive the shipment. If the core isn't received back 30 days from customer receipt then your core charge will be forfeited.
Core Shipping Options:
- Pre-Ship Core - This allows you to ship your used cores in first without have to pay a core charge. Your order will ship once your cores are received.
- Return After Install - This is the quickest option to get your valve body. You pay the core fee up front and then it is refunded once the core is returned.
41 Reviews Hide Reviews Show Reviews
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Worth Every Penny
Installed fairly easily on my 02 Excursion 7.3. MY transmission was not having any issues prior to install, but I wanted a little extra security after other mods. Shifts are now immediate, and almost imperceptible by seat of the pants. I wish I had done this sooner.
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Poor performance
Original valve body had 2-3 shift sticking. Put this one in and as soon as the tranny gets warm it randomly sticks valves. Replaced the solenoids to eliminate that problem and no change.
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Perfect Shifts
My shifting is much tighter and concise. This is how it should have come from the factory. Recommend this highly if you want a good shifting transmission.
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Awesome
Highly recommend even with my tune still shifts smooth.
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99.5 7.3 250/100 gtp38r hydra tuned
Shipped fast, instructions clear. I could originally feel the clutches slipping g on hot tunes now it just grips & feels smoother than stock. Saved me from exploding my trans. Now I just need a better converter.
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Messy but easy install
What a difference, it is like I installed a new transmission. Shifts are so much better and more positive.
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John woods valve body
Best Accumulator Valve Body on the Planet!
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Awesome!!
Great shifts , no more sliding into gears , firm but not too firm ! Great product! Love it!
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Shifts are scary smooth
After installing VB, the shifts are so smooth its hard to tell it even shifted. Doesn't matter if you're cruising, towing, or under a load like climbing a hill.
