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.

• Machined from billet aluminum
• Cover will not fall out of position like OE covers
• Dual O-ring design prevents leaks
• Can be used with or without accumulator spring