Featured Products

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Performance Pack for the Ford 4R100, 98-UpThis Performance Pack, Transtar part number S36507HPK, is available now from Transtar (Sonnax part number HP-4R100-01). This new-and-improved powerhouse kit for the Ford 4R100 transmission provides a more consistent shift feel across all applications and includes additional parts for a greater value.
Premium Rebuilt Valve Body for the Chrysler 48RE, 2003-UpThe premium rebuilt valve body for the Chrysler 48RE is a 46/47RE valve body has been converted by Sonnax to fit all 48RE applications from 2003-Up. It can also be used for slight performance upgrades on 46/47RE applications. When using in the 46/47RE applications, however, a triple-plate converter must also be used. This valve body has been 100% tested to ensure pressure curves and timing match the OE design and is great for pressure and lockup upgrades in 46/47RE applications.
Transgo 6T70 Shift KitThe Transgo 6T70 Shift Kit addresses both shift and torque converter issues. The kit includes a pressure switch repair kit (also available separately).
AW 55-50/55-51SN, AF23/33, RE5F22A Sonnax Zip Kit This kit (Transtar part number S89741ZK) addresses burnt brake clutches, burnt clutches, delayed engagement, inadequate lubrication, low pressure, slips and flares, soft shifts, TCC apply and release concerns, and TCC codes.
5R110W Valve Body 03-UpThis premium valve body is found in Ford SUVs, trucks and vans, years 2003-2010. Each valve body features a new Sonnax manual valve and end plug kit.
AFL Valve Repair Kit 4T65E 97-UpTranstar offers the AFL valve repair kit for the 4T65E from Superior Transmission Parts. This kit does not require any additional reamers.
Aisin Warner OEM Valve BodiesNew Aisin Warner OEM valve bodies for the AW55-50SN Nissan applications. D89740C (31705-8Y00B) is for Nissan applications covering years 2003 to 2005. D89740CA (31705-8Y00A) is for Nissan applications covering August 2005 to June 2006. These regularly replaced items are new OEM and include all electronics and solenoids.
Aisin-Warner TF81 (AF21) valve body with solenoids, 2005-upThis late model premium rebuilt valve body for the Aisin-Warner TF81 or AF21 is for use in Ford and Mazda applications for years 2005 and up. The P39740-1 features all available Sonnax updates, tested linear solenoids, and are fully functionally tested. This valve body has a 12 month/unlimited mileage warranty.
AW55-50SN Valve body, Saab/GM, B or C Code, 2005-UpNow available is the new OEM valve body for the AW55-50SN transmission - Saab and GM applications, 2005 and up. This valve body features the dome-type S2 solenoid and comes with the B5 spring. The ID codes are B or C.
Bonded Valve Body Plates, ZF6HP26/6R60/75/80 2002-UpTranstar now stocks the bonded valve body plates for the ZF6HP26/6R60/75/80. These units do not use valve body gaskets, but the seperator plates have bonded rubber tracks that seal between the fluid passages in the valve body and case. There are several different plates based on model. The original plates have an ID number (i.e. 1068-327-141 or A035/B035) stamped on them. The correct Transtar number can be determined by this ID number.

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