The Ford A9JB is a 2,498 cc, inline-five turbo-diesel engine produced between 2000 and 2006. It featured a SOHC 20-valve configuration with common rail direct fuel injection and a variable geometry turbocharger (VGT), delivering 80 kW (109 PS) at 3,500 rpm and 270 Nm of torque at 1,800 rpm. Designed for commercial durability, it offered strong low-end pulling power ideal for load-carrying applications.
Fitted primarily to the Ford Transit Mk6 (1991–2000) and Mk7 (2000–2006), the A9JB engine was engineered for high-mileage fleet use with an emphasis on reliability and ease of service. Emissions compliance was achieved through a cooled exhaust gas recirculation (EGR) system and oxidation catalyst, meeting Euro 3 standards across its production run.
One documented reliability concern is premature fuel injector failure observed in certain 2000–2003 production batches. This issue, referenced in Ford Service Action 03S12, was linked to contamination sensitivity in the Bosch CRS 2.0 common rail system. In 2004, Ford implemented a revised fuel filtration protocol and updated injector nozzle design to improve durability.
All A9JB engines comply with Euro 3 emissions standards (VCA UK Type Approval #VCA/EMS/4120).
The Ford A9JB is a 2,498 cc inline-five turbo-diesel engine designed for commercial vehicles (2000–2006). It combines common rail injection with a variable geometry turbocharger to deliver strong low-end torque and consistent performance under load. Designed to meet Euro 3 standards, it prioritizes durability and serviceability for fleet and vocational applications.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,498 cc | |
| Fuel type | Diesel | |
| Configuration | Inline-5, SOHC, 20-valve | |
| Aspiration | Turbocharged (VGT) | |
| Bore × stroke | 89.9 mm × 94.6 mm | |
| Power output | 80 kW (109 PS) @ 3,500 rpm | |
| Torque | 270 Nm @ 1,800 rpm | |
| Fuel system | Bosch CRS 2.0 common rail (up to 1,600 bar) | |
| Emissions standard | Euro 3 | |
| Compression ratio | 18.0:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Garrett VNT13 variable geometry turbo | |
| Timing system | Rubber timing belt (interval: 120,000 km or 6 years) | |
| Oil type | Ford WSS-M2C171-A (15W-40) | |
| Dry weight | 210 kg |
The inline-five layout provides smooth operation under load but requires strict adherence to 120,000 km or 6-year timing belt replacement intervals to prevent valve damage. Ford WSS-M2C171-A (15W-40) oil is recommended for optimal camshaft and turbo protection, particularly in early engines with known injector wear tendencies. The Bosch CRS 2.0 system is sensitive to fuel quality; contaminated diesel can lead to premature injector failure. Post-2004 engines with revised filtration show improved longevity; pre-2004 units should be inspected for injector spray pattern degradation during service. No diesel particulate filter (DPF) simplifies maintenance but requires EGR and oxidation catalyst monitoring for emissions compliance.
Oil Specs: Requires Ford WSS-M2C171-A (15W-40) specification (Ford SIB 03 12 11). Compatible with ACEA B3/B4 standards.
Emissions: Certified to Euro 3 standards across all production years (VCA Type Approval #VCA/EMS/4120). No Euro 4 conversion was issued.
Power Ratings: Measured under ECE R85 standards. Output remains consistent across fuel grades meeting EN 590 specifications.
Ford Technical Information System (TIS): Docs F24980, F25142, SIB 03 12 11
VCA Type Approval Database (VCA/EMS/4120)
UNECE Regulation No. 85 (Engine Power Measurement)
The Ford A9JB was used across Ford's Transit platform with longitudinal mounting and shared with Vauxhall in limited applications via component commonality. This engine received no major platform-specific adaptations and was phased out in 2006 with the introduction of the 2.4L Duratorq TDCi. All applications are documented in OEM technical bulletins.
Locate the engine code stamped on the front lower block near the timing cover (Ford TIS F24970). The 8th VIN digit indicates engine type ('F' for 2.5L DI). All A9JB engines have a black plastic valve cover with "2.5L DI" marking. Critical differentiation: The A9JB uses a rubber timing belt with a 120,000 km service interval, while the later Duratorq TDCi (2006+) uses a timing chain. Service parts require build date verification—injectors for pre-2004 engines are not interchangeable with post-2004 revisions due to nozzle design differences (Ford SIB 03 12 11).
The A9JB's primary reliability risk is fuel injector failure in early production units, with elevated incidence in high-mileage or poorly maintained examples. Internal Ford quality reports from 2004 indicated a measurable number of pre-2004 engines showing injector degradation before 150,000 km, while UK DVSA records show timing belt neglect as a leading cause of engine failure. Extended service intervals and use of non-approved fuel increase injector and belt stress, making adherence to maintenance schedules critical.
Analysis derived from Ford technical bulletins (2000-2006) and UK DVSA failure statistics (2006-2012). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about FORD A9JB.
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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