2011-2014 Mustang GT and 2012-2013 Boss 302 5.0L Engine and Long-Block Donor Identification

Supported checked 6006 service-engine links are BR3Z-6006-H -> BR3Z-6006-BRM, BR3Z-6006-J -> BR3Z-6006-BRM, ER3Z-6006-A -> BR3Z-6006-BRM, BR3Z-6006-G -> DR3Z-6006-DARM, ER3Z-6006-B -> DR3Z-6006-DARM, CR3Z-6006-A -> CR3Z-6006-D and CR3Z-6006-C -> CR3Z-6006-D. Ford additionally lists BR3Z-6009-E -> DR3Z-6006-DARM as a short-block-to-service-engine service solution; because 6009 and 6006 identify different assembly levels, this is not represented as ordinary service-engine interchange or proof of equal contents. No CR3Z-6006-B successor is asserted. The BR3Z/DR3Z GT families and CR3Z Boss family are parallel application branches, not cross-trim supersessions. A current catalog page's 2012-2014 service fitment for CR3Z-6006-D does not create a 2014 production Boss or prove GT interchange. Ford's combined generic 6R80/T56/MT82 service-page metadata also does not create an automatic-production Boss: the production 2012-2013 Boss 302 is retained as MT82 manual-only. Engine tags, VCT connector requirements, transmission preparation and package contents must still match.

Start with recipient and donor 17-character VINs, build dates, GT or Boss 302 identity, transmission and photographs of the engine tag, block/head castings, front cover, oil pan, oil-filter adapter/cooler, VCT connectors, intake and exhaust sides and every connector. Ford identifies Gen 1 as the 2011-2014 Mustang GT era, while its Boss documentation shows distinct rods, pistons, CNC heads, valve train, intake, oil-control/cooling and calibration-related equipment; do not treat a GT long block, Boss service engine or truck Coyote as equivalent from displacement alone. Ford's 2012 and 2013 Boss owner supplements each identify the production Boss drivetrain as the MT82 six-speed manual; 2012-2013 production Boss 302 was manual-only, so generic seller or service-catalog metadata listing 6R80, T56 and MT82 together does not prove an automatic Boss engine package. Confirm whether the physical sale is a bare short block, assembled long block, service engine, complete takeout or engine-plus-transmission package. Itemize cylinder heads/cams/phasers, covers, pan/pickup, oil pump and adapter/cooler, water pump, harmonic damper, intake/throttle body, injectors/rails, exhaust manifolds, coils/plugs, sensors/solenoids, engine harness, PCM/control modules, alternator, starter, A/C compressor, mounts, flywheel/flexplate, clutch/torque converter, fasteners, fluids and gaskets. This Mustang scope uses electric power-assisted steering and no factory engine-driven hydraulic power-steering pump; a hydraulic pump supplied with a claimed donor is evidence of a non-stock or other-application package that must be resolved, not a required Mustang accessory. Automatic/manual preparation and a flexplate delivered on a service engine are package facts, not proof of plug-and-play fit. For used or remanufactured units require donor mileage and VIN, engine tag, start/run video when lawful, qualified compression and leak-down results with method, oil-pressure evidence, borescope or internal inspection where warranted, oil/coolant contamination checks, timing noise, overheating or low-oil history, modifications/tune history, broken castings/connectors/mounts, corrosion, storage, core identity, warranty labor limits and return terms. Engines and blocks must be drained and shipped under carrier rules; the shipper remains responsible for hazardous-fluid classification, packaging, marking and documents. Use current VIN-specific Ford service and emissions procedures and qualified installation/calibration; this buyer guide provides no engine-swap or emissions-defeat instructions.

A Ford service engine or VIN/tag-matched remanufactured Gen-1 Mustang GT long block may be compared after its exact internals, VCT connectors, pan/cooler, covers, transmission preparation and included equipment are written down. A Boss 302 replacement must be explicitly supported as Boss-spec by the manufacturer and still requires exact package confirmation; a generic 2011-2014 Coyote listing is not enough. Ford Performance Gen-1, Boss 302S, Aluminator, sealed-race and other crate/performance engines are outside the donor/interchange claim unless the buyer independently establishes lawful road use, controls, emissions compliance and every required component through qualified professionals. Truck/SUV Coyotes, 2015-up generations, mixed-generation builds, deleted controls, altered oiling and universal swap packages are excluded.

Scope is US/LHD 2011-2014 Mustang GT and production 2012-2013 Boss 302 only; Boss production was MT82 manual-only, and generic 6R80/T56/MT82 metadata does not create an automatic Boss. Match VIN/build, GT/Boss, engine tag/service branch, transmission preparation, VCT connectors, pan/cooler, controls, accessories and exact package contents. Long block, service engine and complete takeout are not synonyms. Require documented internal condition, mileage, core/warranty and drained protected freight. Modified PATS-deleted/return-style-fuel controls are not stock donor evidence. Generic Coyote, truck, S550, crate/race and swap claims are excluded; no emissions defeat or swap procedure is provided.

Supersede reviewed 23 unique research sources for this guide. 7 also appear above as a seller or official action and are not repeated here; 16 additional citations follow.

Research last verified 2026-07-29.

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