Porsche 959 2.8L Twin-Turbo Engines
from £95,000 to £185,000
Rebuilt units from £95,000 · Common codes: 959.50
Get specialist quotes from UK Porsche 959 engine experts. Compare rebuilt & restored 959.50 twin-turbo flat-6 engines for Komfort to Sport. Get specialist quotes for your 959.
Porsche 959 2.8L Twin-Turbo Engines
from £95,000 to £185,000
Rebuilt units from £95,000 · Common codes: 959.50
Porsche 959 Komfort Engine Rebuilds
from £95,000 to £145,000
Rebuilt units from £95,000 · Common codes: 959.50 (444hp)
Porsche 959 Sport Engine Rebuilds
from £145,000 to £185,000
Rebuilt units from £145,000 · Common codes: 959.50 (508hp)

Most replacements completed within 3-5 days.


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Not sure which variant your Porsche 959 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 Porsche 959 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 petrol and performance engine families across Porsche 959 variants.

959.50 - 2.8L Petrol
Main replacement demand comes from timing-chain, cooling-system and performance thermal-management faults.
Compatible variants
Avg. rebuilt price
£95,000 - £185,000
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 Porsche 959 engine specialists. Every rebuilt engine comes with a minimum 12-month unlimited mileage warranty.

The Porsche 959's sole 959.50 twin-turbo flat-six is a masterpiece of engineering, but its complexity means specialist attention is essential. Turbocharger wear, hydraulic system leaks, and ECU faults dominate replacement enquiries. Every rebuilt engine supplied through EngineMarket includes upgraded internal components designed to address original failure...
Porsche 959 Turbocharger Failure
Most affected vehicles
Porsche 959 Komfort, Sport, Rallye (1986-1993, 959.50)
Failure mileage range
12,000-25,000 miles
Typical failure window
Root cause
Sequential turbocharger oil seals degrade under high thermal cycling; bearing wear accelerates with infrequent use or poor storage conditions.
Repair options & estimated costs (UK ranges)
| Repair tier | Dealer price | Specialist price | What it involves | Longevity / suitability |
|---|---|---|---|---|
| Minor - Turbo Seal Refresh | £18,000 - £28,000 | £12,000 - £19,000 | Remove turbos, replace oil seals and bearings, bench test flow rates | Viable only if caught early before shaft damage; 2-5k miles expected life extension |
| Full Replacement - Rebuilt 959.50 Engine | £165,000 - £210,000 | £95,000 - £185,000 | Complete engine removal, full rebuild with upgraded turbo components, dyno validation, 12-month warranty | Recommended for high-mileage or neglected units; restores factory performance with enhanced durability |
Our recommendation
On a Porsche 959 valued at £300,000-£1,000,000, preventative turbo maintenance is essential. If boost pressure loss or oil consumption is detected early, a seal refresh may suffice. However, once shaft play or compressor damage is confirmed, full engine replacement with upgraded turbos offers better long-term value and preserves collector provenance.
Compare rebuilt 959.50 engine prices for your Porsche 959
Every Porsche 959 engine type is available through our UK network with typical price ranges based on the 959.50 code, variant specification and collector-grade rebuild requirements.
Compare Porsche 959 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 Porsche 959 within hours.

Every displacement fitted to the Porsche 959 is listed below, with compatible engine codes, production years and common failure notes for UK owners.
The sole engine fitted to the Porsche 959 across its entire production run, the 2.8L twin-turbo flat-six (959.50) represented Porsche's technological flagship, combining sequential turbocharging, all-wheel drive and hybrid air/water cooling in a road-legal supercar.
Engine Code(s)
959.50
Compatible Models (UK)
Komfort (1986-1993), Sport (1987-1988), Rallye prototypes
Power output
Verified by registration
Common Failure Points
Sequential turbo oil seal wear, hydraulic suspension fluid cross-leaks, Bosch Motronic 2.1 harness degradation
Production Years: 1986
Compare Porsche 959 2.8L petrol engine prices
Choose your Porsche 959 engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from the Komfort to the ultra-rare Sport.
The Porsche 959 was offered exclusively with a petrol-powered 2.8L twin-turbo flat-six (959.50), making it the sole fuel type for this collector icon across all UK deliveries.
Common Porsche 959 Petrol Engine Families
Found In
Known For
Typical Petrol Models
The Porsche 959 was offered exclusively with a petrol-powered 2.8L twin-turbo flat-six (959.50), making it the sole fuel type for this collector icon across all UK deliveries.
Common Porsche 959 Petrol Engine Families
Found In
Known For
Typical Petrol Models
Not sure which fuel type your Porsche 959 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 Porsche 959 specialists.

This section covers all major engine changes across the Porsche 959's production timeline, organised so owners can quickly identify their 959.50 engine and compare rebuilt engine prices from UK specialists.
⚙Key Changes
▣Main Engines
959.50- 2.8L petrol (Komfort, Rallye prototypes)
▰Popular Models
🔧Known For
Engine Codes Covered:
959.50