S197Seller listing
Listed priceSee seller for current price
View listing at Fordpartsgiant; opens in a new tabS197 Mustang · Buyer's guide
2005-2010 Mustang 5R55S Valve Body and Solenoid-Block Diagnosis
2005-2010 Mustang equipped with the 5R55S automatic transmission. 2009-up valve-body casting changes require transmission/build confirmation.
Current seller options
WHERE TO BUY
Open an exact listing, then confirm fitment, stock, price, and shipping with the seller before ordering.
Disclosure: Supersede participates in the eBay Partner Network and may earn a commission from qualifying purchases. Commission-eligible seller cards are identified below. This does not affect your price, our fitment research, or how sellers are selected.
Seller links checked . Prices and availability can change.
S197Seller listing
Listed priceSee seller for current price
View listing at Vipih; opens in a new tabChecking live eBay listing…
Current priceChecking live listing…
S197Seller listing
Listed priceSee seller for current price
View listing at Sonnax; opens in a new tabWhat you need to know
Verify the transmission tag and diagnose codes, fluid condition, wiring, servos, solenoid block and hydraulic valve body separately. 2009-up casting changes and whether a reman valve body includes a solenoid pack must be checked explicitly.
OEM numbers
Checked solenoid block 9L2Z-7G391-A replaces 4L2Z-7G391-AA. Sonnax F032 is a 2002-2008 reman valve-body family and does not include the solenoid pack. Confirm casting, separator plate and model year.Supersession
4L2Z-7G391-AA -> 9L2Z-7G391-A is supported for the solenoid assembly. It does not erase the documented 2009 valve-body casting changes or make every complete valve body interchangeable.
Fitment
Verify the transmission tag and diagnose codes, fluid condition, wiring, servos, solenoid block and hydraulic valve body separately. 2009-up casting changes and whether a reman valve body includes a solenoid pack must be checked explicitly.
Aftermarket options
OEM solenoid blocks, updated replacement packs and reman valve bodies exist. A complete transmission is a different scope and is not presented as the default response to a solenoid or valve-body code.
Before you buy
Confirm transmission tag, model year/casting and whether a reman valve body includes the solenoid pack. Codes alone do not prove a valve-body purchase. 2009-up changes prevent a universal 2005-2010 interchange claim.
Research and fitment sources
Supersede reviewed 9 unique research sources for this guide. 4 also appear above as a seller or official action and are not repeated here; 5 additional citations follow.
Research last verified .