- Machined from billet aluminum
- Cover will not fall out of position like OE covers
- Dual O-ring design prevents leaks
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- Can be used with or without accumulator spring
Sonnax 1-2 accumulator piston cover kit 35988-01K, a machined aluminum accumulator cover for use in any GM TH350 and TH350c transmissions, provides a strong yet lightweight alternative to OE accumulator covers. The dual O-ring design eliminates leaks and ensures the cover stays in position when used without an accumulator spring.