Spider 2.4 JTDm Diesel Engines
from £1,495 to £3,200
Rebuilt units from £1,495 · Common codes: 939A3000, 939A3001, 939A4000
Get quotes from trusted UK Alfa Romeo Spider engine specialists. Compare rebuilt and performance reconditioned prices for AR16105, AR32201, 937A1000 - Busso V6 covered. Find UK performance engine specialists.
Spider 2.4 JTDm Diesel Engines
from £1,495 to £3,200
Rebuilt units from £1,495 · Common codes: 939A3000, 939A3001, 939A4000
Spider 3.2 V6 JTS Petrol Engines
from £2,195 to £4,800
Rebuilt units from £2,195 · Common codes: 939A2000, 939A2001, 939B2000
Spider 2.2 JTS Petrol Engines
from £1,295 to £2,900
Rebuilt units from £1,295 · Common codes: 939A1000, 939A1001, 939B1000

Most replacements completed within 3-5 days.


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Not sure which variant your Alfa Romeo Spider 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 Alfa Romeo Spider 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 Alfa Romeo Spider variants.

939A3000 - 2.4L Diesel
Main replacement triggers are timing chain wear, EGR / cooling faults and turbo-control issues.
Compatible variants
Avg. rebuilt price
£1,495 - £2,850
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 Alfa Romeo Spider engine specialists. Every rebuilt engine comes with a minimum 12-month unlimited mileage warranty.

The Alfa Romeo Spider's 939-platform engines - particularly the 2.4 JTDm five-cylinder diesel and 3.2 V6 JTS petrol - dominate UK replacement enquiries due to specific failure patterns. Every rebuilt engine supplied through EngineMarket includes upgraded internal components designed to address the original failure point, plus a minimum 12-month unlimited...
2.4 JTDm Turbo Actuator Failure
Most affected vehicles
Alfa Romeo Spider 2.4 JTDm (2006-2010, 939A3000 & 939A4000)
Failure mileage range
70,000-110,000 miles
Typical failure window
Root cause
Variable nozzle turbo vanes seize from carbon buildup, causing the actuator to stick and trigger limp mode to protect the engine.
Repair options & estimated costs (UK ranges)
| Repair tier | Dealer price | Specialist price | What it involves | Longevity / suitability |
|---|---|---|---|---|
| Minor - Actuator Replacement Only | £850 - £1,400 | £495 - £850 | Remove turbo, replace actuator motor, recalibrate VNT mapping | Temporary fix if vanes are clean; may recur if carbon buildup not addressed |
| Intermediate - Turbo Rebuild | £1,800 - £2,900 | £1,150 - £1,850 | Strip turbo, clean vanes, replace actuator and bearings, bench test | Restores full function for 40k-60k miles if driving patterns improve |
| Full Replacement - Rebuilt JTDm Engine | £3,200 - £5,100 | £1,495 - £2,850 (supply) + fitting | Supply & fit rebuilt engine with upgraded turbo, new gaskets, 12-month warranty | Best value for high-mileage Spiders; eliminates multiple failure points at once |
Our recommendation
On a Spider worth £4,000-£8,000, if the turbo actuator fails after 90k miles, replacement with a rebuilt JTDm engine including upgraded turbo components offers better long-term value than repeated actuator repairs. We recommend getting quotes for both options before deciding.
Compare rebuilt 939A3000 engine prices for your Alfa Romeo Spider
Every engine type for the Alfa Romeo Spider is available through our UK network with typical price ranges based on variant, engine code and budget.
Compare Alfa Romeo Spider 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 Alfa Romeo Spider within hours.

Every displacement fitted to the Alfa Romeo Spider is listed below with compatible engine codes, production years and common failure notes to help you identify the right replacement.
The 2.0L JTDm four-cylinder diesel was introduced for the Spider in 2009 as an entry-level option, offering improved fuel economy for high-mileage convertible owners while retaining the torque characteristics expected from Alfa's diesel range.
Engine Code(s)
939A5000 (163hp), 939A6000 (170hp)
Compatible Models (UK)
2.0 JTDm 163hp (2009-2010), 2.0 JTDm 170hp
Power output
Verified by registration
Common Failure Points
EGR cooler leaks, turbo wastegate sticking, timing belt service neglect risks
Production Years: 2010
Get quotes for Alfa Romeo Spider 2.0L diesel engines
Choose your Alfa Romeo Spider engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from the economical 2.0 JTDm diesel to the performance 3.2 V6 JTS petrol.
Diesel Spiders, particularly the five-cylinder 2.4 JTDm, dominate UK replacement enquiries due to strong original sales and DPF/EGR-related failures on convertibles used for shorter journeys.
Common Alfa Romeo Spider Diesel Engine Families
Found In
Known For
Typical Diesel Models
Diesel Spiders, particularly the five-cylinder 2.4 JTDm, dominate UK replacement enquiries due to strong original sales and DPF/EGR-related failures on convertibles used for shorter journeys.
Common Alfa Romeo Spider Diesel Engine Families
Found In
Known For
Typical Diesel Models
Petrol Spiders feature Alfa's JTS direct injection technology across 1.8L turbo, 2.2L four-cylinder and 3.2L V6 configurations, with the V6 representing the performance flagship for enthusiast convertible owners.
Common Alfa Romeo Spider Petrol Engine Families
Found In
Known For
Typical Petrol Models
The Alfa Romeo Spider Type 939 (2006-2010) was not offered with hybrid, plug-in hybrid or electric powertrains in the UK market; all engines are conventional petrol or diesel units.
Important Notes
Not sure which fuel type your Alfa Romeo Spider 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 Alfa Romeo Spider specialists.

This section covers all major engine changes across the Alfa Romeo Spider Type 939 production timeline (2006-2010), organised so owners can quickly identify their engine and compare rebuilt prices from UK specialists.
⚙Key Changes
▣Main Engines
939A1000- 2.2L JTS petrol 185hp (2.2 JTS variants)
939A3000- 2.4L JTDm diesel 200hp (2.4 JTDm variants)
▰Popular Models
🔧Known For
Engine Codes Covered:
939A1000939A3000