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4R70W 4R75W Valve Body Retainer Plate Protector 2001 and Up. The valve body stiffener plate in the 2-3 accumulator area was eliminated on 2001 and later 4R70W and 4R75W transmissions. Oil pressure builds up in unused cavities under the separator plate causing the plate to flex upwards, allowing forward and direct oil passages to cross leak.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.