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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valve body
right from the first shift I liked it. 99 F350. But I thought I put mine in wrong location Direction say front and I installed in rear near the driveshaft.
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Shifts so nice now!
Added this to my list of parts on my truck and with the custom tuning from 1023 my truck shifts perfect! Nice smooth and firm shifts very impressed and a must do for anyone with performance add on’s.
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JW valve body
Feels like a whole different transmission. Locks up sooner and much faster shifts. This should be the first mod anyone does to their 7.3 with a 4r100. Highly recommended
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Jhon wood valve body
Excellent no delay between shifts anyone feels much better
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John wood valve body
Installation was a breeze. Transmission was acting like a 5 speed prior to install instead of 4. Old valve body appears to have had a broken spring in it. Shifts now are really quick and firm almost a bit to stiff but its probably alot better for the transmission. Highly recommend to anyone having any similar issues with there 4r100. Great product thanks riff raff
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Don't forget the small filter!
Part swapped in and out pretty easy. Must have is an in-lb torque wrench. There's a small filter that pops out when you remove the valve body. Don't forget to put it back. Transmission shifts much better now and my shift flare is eliminated.
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Performance when Installed in a 2001 F-450, 7.3 turbodiesel
This truck is nearly 12,000 lbs empty. The John Woods Valve body immediately cured flaring on shifts and a hard 1-2 shift. Every shift now, up or down is flawless in every respect.
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My 4r100 will chirp 2 gear now ...very pleased with vavle body..worth every penny..be sure not to RIP the gasket!!
Works great!
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Better Shifting
I was experiencing the long shift from OEM tranny especially at lower speeds. After installing Woods valve body the tranny shifts at lower rpms and is smoother.
