K2500 2.5 CRDi Diesel Engines
from £1,200 to £3,800
Rebuilt units from £1,800 · Common codes: D4CB, D4CB-A, D4CB-B, D4CB-C
Get quotes from trusted UK Kia K2500 engine specialists. Compare reconditioned, rebuilt and used prices for 2.5L CRDi - D4CB & J2 covered. Compare supply & fit options today.
K2500 2.5 CRDi Diesel Engines
from £1,200 to £3,800
Rebuilt units from £1,800 · Common codes: D4CB, D4CB-A, D4CB-B, D4CB-C
K2500 2.5 TCI Diesel Engines
from £800 to £2,400
Rebuilt units from £1,400 · Common codes: D4BH, D4EB, D4BH-A, D4EB-A
K2500 4x4 Agricultural Engines
from £1,500 to £4,200
Rebuilt units from £2,200 · Common codes: D4CB-4x4, D4BH-4x4, D4EB-4x4

Most replacements completed within 3-5 days.
See typical UK rebuilt engine costs for Kia K2500 variants - compare failure causes, engine codes, fuel types and supply-only prices to find affordable replacement options.


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Not sure which variant your Kia K2500 is- Enter your registration number above - we'll identify the exact sub-model, engine code and compatible replacement options instantly.

Every engine code fitted to the Kia K2500 across all generations, with technical specs, compatible variants and trims, known failure points, and average rebuilt prices from UK specialists. Select any engine code to compare quotes.
Extracted from detailed diesel engine families across Kia K2500 variants.

D4CB - 2.5L Diesel
Main replacement triggers are timing chain wear, EGR / cooling faults and turbo-control issues.
Compatible variants
Avg. rebuilt price
£1,200 - £3,800
Supply only
Technical specifications
Common failures
Not sure which engine code?
Can't find your engine code- Enter your registration number above - we'll instantly identify the exact unit, its technical specifications, and live replacement prices from UK Kia K2500 engine specialists. Every rebuilt engine comes with a minimum 12-month unlimited mileage warranty.

The Kia K2500 is a workhorse built for high-mileage commercial use, but its 2.5 CRDi (D4CB) and older 2.5 TCI (D4BH/D4EB) diesel families are prone to specific wear patterns that can sideline your business. Common issues range from fuel delivery faults to turbo and bottom-end wear. Every rebuilt Kia K2500 engine supplied through our network includes...
Kia K2500 D4CB Injector Failure
Most affected vehicles
Kia K2500 Dropside, Closed Van, Double Cab & Chassis Cab (2010-2018, D4CB 2.5 CRDi)
Failure mileage range
80,000 - 120,000 miles
Typical failure window
Root cause
High-pressure common rail injectors suffer from carbon buildup and tip erosion under heavy stop-start commercial use, causing misfires, poor economy, and eventual multi-injector failure.
Repair options & estimated costs (UK ranges)
| Repair tier | Dealer price | Specialist price | What it involves | Longevity / suitability |
|---|---|---|---|---|
| Minor - Injector Cleaning/Testing & Single Replacement | £600 - £1,100 | £350 - £700 | Diagnostic strip-down, bench testing, and replacing one faulty injector with coding recalibration. | Only viable if one injector is at fault. High risk of recurrence within 20,000 miles on aged rails. |
| Intermediate - Full Injector Set Replacement | £2,200 - £3,400 | £1,400 - £2,100 | Removing and replacing all four injectors, flushing the fuel lines, and updating ECU mapping. | Extends life by 40,000+ miles, but does not fix underlying rail wear or pump degradation. |
| Full Replacement - Rebuilt / Reconditioned Kia K2500 Engine | £3,800 - £5,200 | £2,200 - £3,500 (Supply & Fit) | Complete engine swap with upgraded injectors, cleaned fuel rails, bench-tested components, and warranty. | Restores factory performance permanently. Most cost-effective for vehicles with 100k+ miles. |
Our recommendation
On a high-mileage Kia K2500, replacing a full set of D4CB injectors rarely delivers long-term value if the fuel rail or pump is already worn. We recommend opting for a complete rebuilt engine if diagnostics show erratic rail pressure or multiple injector faults, as it eliminates cumulative fuel system failures in one transaction.
Compare rebuilt D4CB engine prices for your Kia K2500 →
Every engine type is available through the UK network with typical price ranges based on variant, engine code and budget.
Compare Kia K2500 engine prices with vetted UK suppliers
All engine types include a minimum 12-month unlimited mileage warranty when sourced through EngineMarket. Prices are typical UK market ranges based on historical quote data from our network and depend on exact engine code, variant, mileage and supplier. Use our free comparison tool above - enter your registration to get tailored quotes for your specific Kia K2500 within hours.

Every displacement officially fitted to the Kia K2500 across all UK generations is detailed below, complete with compatible engine codes, model years, and documented failure notes to ensure accurate replacement matching.
The 2.5-litre diesel unit has been the sole powerplant across the entire UK K2500 lineup, serving as a dedicated commercial workhorse from its 2004 introduction through to 2018. Initially launched with indirect injection (TCI) technology for durability, it transitioned to a common-rail (CRDi) direct injection system in 2010 to meet stricter Euro 4 and Euro 5 emissions standards while improving torque and fuel economy. This single displacement family underpins every variant configuration, ensuring parts compatibility and straightforward replacement logistics for fleet operators.
Engine Code(s)
D4CB, D4BH, D4EB
Compatible Models (UK)
Dropside, Closed Van, Double Cab, Single Cab, Chassis Cab, Tipper, 4x2 & 4x4 Agricultural
Power output
Verified by registration
Common Failure Points
CRDi injector degradation, SCV/DRV valve pressure loss, turbocharger seal wear, D4BH/D4EB immobiliser fuel-cut solenoid faults.
Production Years: 2004-2018
Get quotes for Kia K2500 2.5L diesel engines
Choose your Kia K2500 engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from early 2.5 TCI units to the latest 2.5 CRDi powerplants.
The sole powerplant across all UK K2500 generations, the 2.5-litre diesel family dominates replacement enquiries with proven commercial durability but known high-mileage failure patterns.
Common Kia K2500 Diesel Engine Families
Found In
Known For
Typical Diesel Models
The sole powerplant across all UK K2500 generations, the 2.5-litre diesel family dominates replacement enquiries with proven commercial durability but known high-mileage failure patterns.
Common Kia K2500 Diesel Engine Families
Found In
Known For
Typical Diesel Models
Not sure which fuel type your Kia K2500 has- Enter your registration number above to instantly identify your engine code, fuel system and compatible replacement options - all backed by a minimum 12-month unlimited mileage warranty from UK Kia K2500 specialists.

This technical timeline covers every major engine change across the Kia K2500's UK production run from 2004 to 2018, organised so commercial operators can quickly identify their engine code and compare rebuilt replacement prices from UK specialists.
⚙Key Changes
▣Main Engines
D4BH- 2.5L Diesel TCI (Dropside, Closed Van, Single Cab, Chassis Cab)
D4EB- 2.5L Diesel TCI (Updated variant, 2006-2009 models)
▰Popular Models
🔧Known For
Engine Codes Covered:
D4BHD4EB