Diamante 2.0L V6 Engines
from £950 to £2,400
Rebuilt units from £950 · Common codes: 6A12, 6A12SOHC, 6A12DOHC, 6G71
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Mitsubishi Diamante Engine Replacement - Compare Quotes from UK Specialists
Get quotes from trusted UK Mitsubishi Diamante engine specialists. Compare reconditioned and rebuilt prices for 6G72 and 6G74 - 3.0L to 3.5L V6 covered. Get specialist quotes for your Diamante.
Supply & Fit Available
12-Month Warranty
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Diamante 2.5L V6 Engines
from £1,100 to £2,800
Rebuilt units from £1,100 · Common codes: 6G73, 6A13, 6G72, 6G74
Diamante 3.5L V6 Engines
from £1,800 to £4,200
Rebuilt units from £1,800 · Common codes: 6G74, 6G73, 6A13
Instant engine replacement quote - 100% free, no obligation
Engine replacement near me - UK-wide specialist network
Compare reconditioned, rebuilt & used engine prices
Supply & fit available - parts and labour from vetted specialistsInstant engine replacement quote - 100% free, no obligationEngine replacement near me - UK-wide specialist networkCompare reconditioned, rebuilt & used engine pricesSupply & fit available - parts and labour from vetted specialistsHow It Works
3 Simple Steps3 Simple Stepsto Finding the Best Mitsubishi Diamante Replacement Engineto Finding the Best Mitsubishi Diamante Replacement Engine
12-Month Warranty
Supply & Fit Available
Nationwide Delivery
Trusted UK Suppliers
Most replacements completed within 3-5 days.
Live UK Engine Market Data
What Are UK Drivers Paying for Mitsubishi Diamante Engine Replacement
The table below shows typical UK rebuilt engine costs across Mitsubishi Diamante variants - compare failure causes, engine codes, fuel types, and price ranges to benchmark what UK drivers are paying.
Average Market Prices
↻ Last updated: 4 Aug 26, 9:26
Customer Reviews
Trusted by Mitsubishi Diamante Owners Across the UK
Rated 4.8 out of 5 by 1,081 verified customers who sourced reconditioned and used Mitsubishi Diamante engines through EngineMarket.
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“Thanks to EngineMarket, I saved over £1,200 on my engine replacement and got matched with a great local specialist within the hour.”
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“Got three quotes within an hour and chose the best deal easily. The whole process was quick, clear and stress-free.”
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“I wasn't sure what I needed, but they helped me identify the right engine and connected me with a trusted garage.”
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“Thanks to EngineMarket, I saved over £1,200 on my engine replacement and got matched with a great local specialist within the hour.”
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Variants We Cover
Mitsubishi Diamante Engine ReplacementAll Variants Covered
Mitsubishi Diamante 20E
6A12 2.0L Petrol
Rebuilt Engines: £950-£2,100
Mitsubishi Diamante 20 Espada
6A12 2.0L Petrol
Rebuilt Engines: £1,000-£2,200
Mitsubishi Diamante VR
6A12DOHC 2.0L Petrol
Rebuilt Engines: £1,100-£2,400
Mitsubishi Diamante 25V
6G73 2.5L Petrol
Rebuilt Engines: £1,100-£2,600
Mitsubishi Diamante Wagon
6G73 2.5L Petrol
Rebuilt Engines: £1,200-£2,700
Mitsubishi Diamante LS
6G74 3.5L Petrol
Rebuilt Engines: £1,800-£4,200
Not sure which variant your Mitsubishi Diamante is- Enter your registration number above - we'll identify the exact sub-model, engine code and compatible replacement options instantly.
Diamante
Engine Codes
Mitsubishi Diamante Engine CodesFull Technical Specifications & Replacement Guide
Every engine code fitted to the Mitsubishi Diamante 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.
Petrol Engines
Extracted from detailed petrol and performance engine families across Mitsubishi Diamante variants.
6A12 - 2.0L Petrol
Main replacement demand comes from timing-chain, cooling-system and performance thermal-management faults.
Compatible variants
20E20 EspadaVRWagon
Avg. rebuilt price
£950 - £2,400
Supply only
Technical specifications
- Fuel type
- Petrol
- Engine size
- 2.0L
- Power output
- 135-160 hp
- Years fitted
- 1990-2005
Common failures
- ●Main replacement demand comes from timing-chain, cooling-system and performance thermal-management faults.
- ●Confirm exact engine code and fitment before ordering.
- ●Ask for warranty and supply & fit terms.
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 Mitsubishi Diamante engine specialists. Every rebuilt engine comes with a minimum 12-month unlimited mileage warranty.
Diamante
Common Problems
Mitsubishi Diamante Engine Problems - What It Costs to Fix & When Replacement Makes Sense
The Mitsubishi Diamante's 6A12 and 6G7x V6 engines are generally robust, but UK grey import owners commonly face timing belt failures, low-RPM misfires, and valve noise issues. Every rebuilt engine supplied through EngineMarket includes upgraded internal components designed to address the original failure point - plus a minimum 12-month unlimited mileage...
Timing Belt Failure - Why Mitsubishi Diamante Engines Suffer Catastrophic Damage
Timing Belt Failure
Most affected vehicles
Mitsubishi Diamante 20E20 Espada
Mitsubishi Diamante 20E, 20 Espada, VR, 25V, Wagon (1990-2005, 6A12, 6G73, 6G74)
Failure mileage range
60,000-90,000 miles if not replaced preventatively
Typical failure window
Root cause
The 6A12/6G7x family are interference engines; a snapped timing belt causes pistons to strike valves, bending both.
Repair options & estimated costs (UK ranges)
| Repair tier | Dealer price | Specialist price | What it involves | Longevity / suitability |
|---|---|---|---|---|
| Preventative Belt Replacement - Before failure occurs | £450 - £750 | £300 - £550 | Replace timing belt, tensioner, water pump, seals | Restores factory service interval; recommended at 60k miles |
| Full Replacement - Rebuilt Engine - After belt snap | £3,200 - £5,500 | £1,800 - £4,200 | Supply & fit rebuilt unit with upgraded components, bench tested | New-engine reliability; only viable option after valve damage |
Our recommendation
If your Diamante is still running and the belt is overdue, invest in preventative replacement. If the belt has snapped, cylinder head damage is almost certain - a rebuilt engine is the only cost-effective solution for grey imports.
Compare rebuilt 6A12 and 6G73 engine prices for your Mitsubishi DiamanteReplacement Engine Options
Mitsubishi Diamante Engine TypesOptions, Costs & What to Expect
Every Mitsubishi Diamante engine type is available through our UK network with typical price ranges based on variant, engine code and budget.
Mitsubishi Diamante Reconditioned Engines (Recon)£950 - £2,800((supply only))
Mitsubishi Diamante Rebuilt Engines£1,100 - £4,200((supply only))
Mitsubishi Diamante Used Engines£650 - £1,900((supply only))
Mitsubishi Diamante Remanufactured Engines£1,400 - £4,500((supply only))
Mitsubishi Diamante Refurbished Engines£750 - £2,200((supply only))
Compare Mitsubishi Diamante 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 Mitsubishi Diamante within hours.
Engine Sizes
Mitsubishi Diamante Engines by SizeFind the Right Displacement for Your Variant
Every displacement fitted to the Mitsubishi Diamante is listed below with compatible engine codes, production years and common failure notes to help you identify the correct replacement.
The 2.0L V6 powered early first-generation Diamante models and remains the most common engine in UK grey imports, with strong JDM parts availability and straightforward compatibility across 20E and Espada trims.
⚙
Engine Code(s)
6A12, 6G71, 6A12SOHC, 6A12DOHC
▣
Compatible Models (UK)
20E (1990-1996), 20 Espada (1994-1996), VR
ϟ
Power output
Verified by registration
△
Common Failure Points
Timing belt failure (interference), hydraulic lash adjuster noise, vacuum solenoid idle issues
Production Years: 1992-1996
Get quotes for Mitsubishi Diamante 2.0L petrol enginesMitsubishi Diamante Engines Fuel Type
Mitsubishi Diamante Engines by Fuel Type
Choose your Mitsubishi Diamante engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from early 20E to the latest LS.
Mitsubishi Diamante Petrol Engines
PetrolAll Mitsubishi Diamante models sold as grey imports in the UK used petrol V6 engines, with the 2.0L 6A12 and 2.5L 6G73 dominating replacement enquiries due to high registration volumes.
Common Mitsubishi Diamante Petrol Engine Families
- •6A12 - most common replacement engine (20E/VR), timing belt risk
- •6G73 - second-gen workhorse (25V/Wagon), misfire under 2000 RPM
- •6G74 - premium LS unit, oil consumption at high mileage
Found In
- •First Generation (1990-1996) - 6A12, 6G71
- •Second Generation (1997-2005) - 6G73, 6G74, 6A13
Known For
- •Interference engine design requires strict timing belt maintenance
- •Hydraulic lash adjuster noise common on cold start
- •Strong JDM parts availability via UK import specialists
Typical Petrol Models
- •20E
- •20 Espada
- •VR
Mitsubishi Diamante Petrol Engines
PetrolAll Mitsubishi Diamante models sold as grey imports in the UK used petrol V6 engines, with the 2.0L 6A12 and 2.5L 6G73 dominating replacement enquiries due to high registration volumes.
Common Mitsubishi Diamante Petrol Engine Families
- •6A12 - most common replacement engine (20E/VR), timing belt risk
- •6G73 - second-gen workhorse (25V/Wagon), misfire under 2000 RPM
- •6G74 - premium LS unit, oil consumption at high mileage
Found In
- •First Generation (1990-1996) - 6A12, 6G71
- •Second Generation (1997-2005) - 6G73, 6G74, 6A13
Known For
- •Interference engine design requires strict timing belt maintenance
- •Hydraulic lash adjuster noise common on cold start
- •Strong JDM parts availability via UK import specialists
Typical Petrol Models
- •20E
- •20 Espada
- •VR
Not sure which fuel type your Mitsubishi Diamante 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 Mitsubishi Diamante specialists.
Engine YearsGet quotes for 1990-1993 Mitsubishi Diamante replacement engines →
Mitsubishi Diamante Engines by YearWhat Was Fitted & WhenMitsubishi Diamante Engines by Year - What Was Fitted & When
This timeline covers all major engine changes across the Mitsubishi Diamante's production run, organised so UK grey import owners can quickly identify their engine and compare rebuilt prices from specialists.
⚙Key Changes
- ✓Mitsubishi Diamante launched as JDM executive sedan
- ✓6A12 SOHC 24v V6 introduced as standard engine
- ✓Early models featured distributor ignition and mechanical fuel injection
- ✓Australian production began for right-hand drive exports
▣Main Engines
6A12- 2.0L petrol (20E base trim)
6G71- 2.0L petrol (early pre-facelift units)
▰Popular Models
- •Mitsubishi Diamante 20E
- •Mitsubishi Diamante base JDM import
🔧Known For
- ✓Robust V6 design with good JDM parts availability
- ✓Timing belt service critical (interference engine)
- ✓Distributor ignition failures on high-mileage examples
- ✓Strong foundation for later engine developments
Engine Codes Covered:
6A126G71Not sure which year your Mitsubishi Diamante was built- Enter your registration number and we'll identify the exact engine, model year, and compatible replacement options instantly - all backed by a minimum 12-month warranty from UK Mitsubishi Diamante specialists.
FAQ