2005-2014 Ford Mustang S197 Factory Automatic-Transmission Assembly Identification

The checked Ford powertrain catalog preserves separate 5R55S V6 B-series and 4.6L GT A-series annual service branches; shared case family does not prove cross-engine or cross-year interchange. For the 3.7L 6R80, BR3Z-7000-A / BR3P-7000-AB remains the checked early branch, while BR3Z-7000-C / BR3P-7000-CC starts at the checked 2014-06-27 split. BR3Z-7000-ARM / BR3P-7000-AA is a reman service family that still requires VIN/build and tag resolution. The 5.0L GT BR3Z-7000-B / BR3P-7000-BB and reman BR3Z-7000-BBRM / BR3P-7000-BA are a separate branch. No 5R55S-to-6R80, V6-to-GT, Mustang-to-truck/SUV or engineering-number-to-service-number blanket supersession is asserted.

Start with recipient and donor VINs/build dates, model/trim, engine, certification label, physical transmission tag and photographs of the case, bellhousing, input/output, tailhousing, pan, connectors and cooler fittings. Match the exact 5R55S or 6R80 engine/year/production branch; for a 2014 V6 resolve the 2014-06-27 split. Compare bellhousing, input shaft and converter pilot/splines, output flange/yoke and driveshaft, tailhousing, mount/crossmember, case bosses, connector/harness, cooler lines, shifter linkage and calibration. Itemize torque converter, pan, valve body/internal electronics, lead frame where applicable, harness, sensors, lines, brackets, mount and hardware. A BR3P engineering tag is verification evidence, not the BR3Z ordering number. For used or remanufactured units require donor VIN/mileage, tag, fluid and pan/debris inspection, operating/diagnostic evidence, internal-work disclosure, core identity, warranty labor limits, return terms and freight condition. Reject cracked/welded cases, damaged splines/threads/mounts, burnt or contaminated fluid, metal/clutch debris, water/fire/flood exposure, unknown overheating, open ports, cut wiring, missing converter or undocumented modification. Inspect and clean or replace contaminated cooler circuits as current service requires. Authorized programming, 6R80 solenoid-strategy entry and adaptive procedures require qualified service information; no security or emissions bypass is provided. Certain 2012 6R80 Mustangs require a VIN-specific recall-status check, not a blanket recall claim.

A professionally remanufactured 5R55S or 6R80 may be compared only when the supplier proves the exact Mustang engine/year/build/tag branch, case and output configuration, torque-converter contents, internal updates, solenoid strategy where applicable, core rules, warranty and freight. Generic family, truck/SUV, performance-built, manual-swap and cross-engine packages are outside this factory-donor identification claim.

A shared 5R55S or 6R80 family name does not make every S197 automatic interchangeable. Match both VINs/builds, engine/year/production branch, physical tag, case/bellhousing, converter, output/tailhousing, connector, cooler, shifter, mount/crossmember and driveshaft interfaces. Resolve the 2014 V6 2014-06-27 split and any 6R80 solenoid strategy/programming requirement. Recall status is VIN-specific. Used condition and written contents matter; manuals, GT500/Boss, 2015-up and truck/SUV units are excluded.

Supersede reviewed 12 unique research sources for this guide. 5 also appear above as a seller or official action and are not repeated here; 7 additional citations follow.

Research last verified 2026-08-06.

1. Parts ford — PowertrainCatalogOpen source
2. Ford Service Information — 10musog2eOpen source
3. Ford Service Information — 14musom2eOpen source
4. NHTSA — RMISC 16V245 1606Open source
5. NHTSA — RMISC 19V075 8919Open source
6. Images oreillyauto — tcm tehcm service guideOpen source
7. Reichwein — seb71006Open source