{"product_id":"sonnax-200-4r-accumulator-piston","title":"Sonnax 200-4R Accumulator Piston","description":"\u003cp\u003eQuality 1-2 accumulator piston for the GM 200-4R four-speed overdrive automatic transmission. This Sonnax component is manufactured to OEM specifications for guaranteed fitment and reliable performance in all 200-4R applications. Essential for any professional rebuild of the transmission used in the legendary Buick Grand National, GNX, and other classic GM performance vehicles.\u003c\/p\u003e\u003cp\u003eCompatible with all 1981-1990 200-4R transmissions in Buick Grand National, Regal, GNX, T-Type, 1982-1984 Corvette, Monte Carlo SS, and other GM vehicles. Professional quality ensures consistent performance and long service life.\u003c\/p\u003e","brand":"Sonnax","offers":[{"title":"Default Title","offer_id":50803787563255,"sku":null,"price":75.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6591\/1287\/files\/ph-piston_cb0cd81e-1262-41c8-8141-22d75596056d.jpg?v=1780071091","url":"https:\/\/coretransmissionparts.com\/products\/sonnax-200-4r-accumulator-piston","provider":"CoreTransmissionParts.com","version":"1.0","type":"link"}