Engine Piston Assembly BK2Q-11-SAO For FORD RANGER 2.2T P4AT T6 PX1 PX2 PX3 Mazda BT-50 2011-2022 — 4pcs STD 86mm Alfin Cooling Gallery Verified OEM Fit

The Engine Piston Assembly Set with OEM numbers BK2Q-11-SAO / BK2Q11SAO is a verified direct-fit replacement for FORD RANGER 2.2T (P4AT / Duratorq 2.2 TDCi) and MAZDA BT-50 2.2L diesel engines. This 4-piston set is a critical reciprocating component responsible for converting combustion pressure into crankshaft rotation and managing thermal load within the cylinder.

The P4AT is a 2,198 cc water-cooled inline-4 DOHC 16-valve turbocharged common-rail diesel engine with an 86.0 mm bore and 94.6 mm stroke, widely used in FORD Ranger PX (T6) and Mazda BT-50 models from 2011 through 2022 (including PX1, PX2, and PX3 series).

This piston set is supplied in standard (STD) 86.00 mm size, with each piston featuring an Alfin insert at the ring-land area for ring-groove reinforcement, an internal cooling gallery for crown temperature management, and a cut-out for oil jet for additional piston cooling. This set is supplied as 4 pistons with pins and circlips — piston rings are not included and must be ordered separately.

• Dimensional Verification: Piston diameter 86.00 mm (STD), compression height 48.40–48.42 mm, overall length 74.80 mm, pin diameter 30 mm, pin length 66.85–67.00 mm, bowl diameter 46.90 mm, bowl depth 15.80 mm — verified against PartsInMotion, Autodoc, and Ozwide Engine Parts technical specifications for the P4AT platform.
• Ring Groove Geometry: Ring grooves sized 2.0 / 2.0 / 2.0 mm — matched to OEM P4AT piston ring specifications for 86.00 mm bore.
• Material & Construction: Manufactured from high-grade aluminum alloy with Alfin insert for ring-land reinforcement, cooling gallery for crown temperature management, and cut-out for oil jet. Surface treatment includes anodized crown and skirt coating for improved scuff resistance and break-in characteristics.
• Engine Code Verification: Compatible with FORD P4AT and GBVAJPF / GBVAJQJ / GBVAJQW engine codes, as well as CV24, CVR5, CVRA, CVRB, CVRC, CY24, CYR5, CYRA, CYRB, CYRC, DRR5, DRRA, DRRB, DRRC, USR6, USRA, USRB, and UYR6 variants.
• OEM Cross-Reference Verified: Replaces BK2Q-11-SAO, BK2Q11SAO, BK2Q-11-SA0, BB2Q-11-SA0 (+0.50), BK2Q-6110-D1E, U201-11-SG0 (ring set). International brand cross-references include Kolbenschmidt 41765600, NURAL 87-427707-50, Goetze Engine 08-422400-00, Enginetech PM004750.
• Multi-Platform Application: Confirmed compatible with FORD RANGER (TKE, T6, PX1, PX2, PX3) from 2011–2022, Mazda BT-50 (UP, UR) from 2011–2021, and FORD Transit (V348) equipped with P4AT engines.

• Loss of engine compression: Worn or stuck piston rings reduce cranking pressure, causing hard starting and noticeable power loss under load.
• Excessive exhaust smoke (blue/white/black): Indicates oil passing rings or incomplete combustion — piston and ring replacement often resolves it.
• Increased oil consumption: Glazed bores or tired ring packs allow oil to enter the combustion chamber, raising operating costs.
• Piston scoring or scuffing: Visible skirt wear or liner wall scoring caused by thermal expansion, insufficient lubrication, or overheating — requires immediate replacement to prevent catastrophic engine failure.
• Knocking or tapping noise: Piston slap or bearing wear requires inspection before further engine operation.

Euro4x4parts confirms fitment for Ranger TKE (T7) 2.2 TDCi 160hp (2015–2019) and 125cv/150cv/160cv T6 (2011–2020). Ozwide Engine Parts confirms fitment for Ranger PX2/PX3 2.2 Lt Diesel P4AT from 8/2015 to 6/2022. SGT Auto Parts confirms compatibility with Ford Ranger, Transit P4AT V348, and Mazda BT50 2.2L. PartsInMotion confirms engine code GBVAJPF compatibility for Ranger TKE 2.2 TDCi.

Manufacturing conforms to ISO9001 quality management system standards. Each piston undergoes 100% quality inspection before packaging.

1. Verify fitment: Confirm piston diameter (86.00 mm), compression height (48.40 mm), and ring groove dimensions (2.0/2.0/2.0 mm) against removed OEM piston.
2. Check piston-to-bore clearance: Measure cylinder bore and piston skirt diameter; compare against manual specification. If cylinder bore wear exceeds OEM limits, select oversize piston (+0.50 mm, 86.50 mm) and bore/hone accordingly.
3. Ring installation: Install rings with correct orientation (top ring marking up); use a ring expander to avoid breaking rings. Stagger ring end gaps at 120° intervals.
4. Check ring end gap: Insert each ring into its cylinder and measure end gap with a feeler gauge. Compare against manual specification.
5. Pin & clip installation: Lubricate pin bore and install piston pin (30 × 67 mm); secure with new circlips (included).
6. Connecting rod torque: Follow manual sequence — always confirm against the specific engine variant manual.
7. Lubricate: Coat rings and cylinder walls with clean engine oil before piston installation. Use a ring compressor for piston insertion.
8. Check liner protrusion: Verify liner protrusion meets specification before final assembly.

• P4AT engine oil capacity: approximately 6.5–7.0 L including filter. Replace engine oil every 10,000 km or 12 months, whichever comes first.
• Oil type: FORD-approved 5W-30 or 0W-30 API CJ-4 / ACEA E6/E7.
• Inspect compression and oil consumption at every 50,000 km or annually.
• Replace piston rings and inspect pistons during any top-end overhaul.

• Standard packing: Neutral packaging / corrugated carton; 4 pcs (one set) per box; wooden pallet available for bulk orders.
• Set options: Standard size (STD 86.00 mm), +0.50 mm (86.50 mm) — specify at inquiry.
• Suitable for: Engine rebuild workshops, fleet maintenance departments, spare parts distributors, and export wholesalers.
• Related parts available: Piston ring set (U201-11-SG0), piston pin (30 × 67 mm), circlips, cylinder liner kit (86 mm), and full P4AT overhaul kit.