K2900 2.5L D4CB Diesel Engines
from £900 to £1,800
Rebuilt units from £1,600 · Common codes: D4CB, D4CB-E3, D4CB-E4
Get quotes from trusted UK Kia K2900 engine specialists. Compare reconditioned, rebuilt and used prices for 2.9L CRDi - J3 & HJ3 covered. Compare supply & fit options today.
K2900 2.5L D4CB Diesel Engines
from £900 to £1,800
Rebuilt units from £1,600 · Common codes: D4CB, D4CB-E3, D4CB-E4
K2900 2.9L J3/K3 CRDi Diesel Engines
from £1,200 to £2,100
Rebuilt units from £1,900 · Common codes: J3, K3, J3-Euro4
K2900 High-Failure Rate Replacement Units
from £1,400 to £2,800
Rebuilt units from £1,600 · Common codes: D4CB, J3, K3, D22E

Most replacements completed within 3-5 days.
See typical UK rebuilt engine costs for Kia K2900 variants - compare failure causes, engine codes, fuel types and sizes to find best value replacements.


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Not sure which variant your Kia K2900 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 K2900 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 K2900 variants.

D4CB - 2.5L Diesel
Main replacement triggers are timing chain wear, EGR / cooling faults and turbo-control issues.
Compatible variants
Avg. rebuilt price
£1,600 - £1,800
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 K2900 engine specialists. Every rebuilt engine comes with a minimum 12-month unlimited mileage warranty.

The Kia K2900 is generally reliable under commercial loads, but the D4CB 2.5-litre, J3/K3 2.9-litre CRDi, and D22E Smartstream families develop predictable wear patterns that eventually demand Kia K2900 engine replacement. Timing chain stretch, rear main seal degradation, and fuel system failures are the primary culprits driving urgent workshop visits....
Kia K2900 Timing Chain Failure
Most affected vehicles
JE & QL chassis K2900 (2008-2018, J3 & K3 engine codes)
Failure mileage range
70,000 - 110,000 miles
Typical failure window
Root cause
Hydraulic tensioner wear combined with oil sludge under commercial stop-start cycles allows the rear-mounted timing chain to stretch, causing loud rattling at idle and potential catastrophic valve damage.
Repair options & estimated costs (UK ranges)
| Repair tier | Dealer price | Specialist price | What it involves | Longevity / suitability |
|---|---|---|---|---|
| Minor - Preventative Chain Replacement | £1,500 - £2,000 | £850 - £1,200 | Replace timing chain, tensioners, guides & oil pump drive before failure occurs. | Viable only if the engine still turns freely without binding; prevents immediate breakdown. |
| Full Replacement - Rebuilt Kia K2900 J3/K3 Engine | £4,000 - £4,800 | £2,500 - £2,900 (Supply & Fit) | Install upgraded rebuilt unit with revised timing components, bench-tested compression & 12-month warranty. | Restores factory reliability; permanently addresses tensioner weakness for heavy commercial use. |
Our recommendation
If the chain is already rattling at idle on a Kia K2900, preventative repair is rarely reliable. The tensioner design leaves little warning before sudden snap. We recommend skipping straight to a rebuilt Kia K2900 J3/K3 engine to avoid unexpected roadside failure and costly clutch contamination.
Compare rebuilt Kia K2900 J3/K3 engine quotes
Every engine type is available through the UK network with typical price ranges based on variant, engine code and budget.
Compare Kia K2900 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 K2900 within hours.

Every displacement fitted to the Kia K2900 is listed below, with compatible engine codes, production years and common failure notes to help you identify the correct replacement unit.
The 2.2L Smartstream D22E diesel represented Kia's final evolution for the K2900, introduced on the QL chassis from 2016. This downsized unit delivered improved fuel efficiency and Euro 6 compliance while maintaining commercial-grade torque for light truck duties, though its late introduction means fewer units remain in service today.
Engine Code(s)
D22E
Compatible Models (UK)
QL chassis cab, QL chassis trayback, Euro 6 compliant models
Power output
Verified by registration
Common Failure Points
Turbo vane sticking, DPF regeneration issues under short-trip commercial use
Production Years: 2016-2018
Get quotes for Kia K2900 2.2L diesel engines
Choose your Kia K2900 engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from early D4CB 2.5L to the latest J3/K3 2.9L CRDi diesel units.
Diesel power exclusively drives the K2900 light commercial range across all UK generations, with the D4CB 2.5L and J3/K3 2.9L CRDi families dominating replacement enquiries from tradespeople and fleet operators.
Common Kia K2900 Diesel Engine Families
Found In
Known For
Typical Diesel Models
Diesel power exclusively drives the K2900 light commercial range across all UK generations, with the D4CB 2.5L and J3/K3 2.9L CRDi families dominating replacement enquiries from tradespeople and fleet operators.
Common Kia K2900 Diesel Engine Families
Found In
Known For
Typical Diesel Models
Not sure which fuel type your Kia K2900 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 K2900 specialists.

This technical timeline covers all major engine changes across the Kia K2900's 2003-2018 UK production run, organised so commercial operators can quickly identify their engine and compare rebuilt engine prices from UK specialists.
⚙Key Changes
▣Main Engines
D4CB- 2.5L diesel (KA chassis cab / trayback / tipper)
▰Popular Models
🔧Known For
Engine Codes Covered:
D4CB