Porsche 928 4.5L Engines
from £2,500 to £5,500
Rebuilt units from £2,500 · Common codes: M28.01, M28.02, M28.03, M28.04
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Porsche 928 M28 V8 Specialist Engine Replacement - Compare Quotes
Get specialist quotes from UK Porsche 928 engine experts. Compare reconditioned & rebuilt M28 V8 engines for 928 to GTS. Get specialist quotes for your 928.
Supply & Fit Available
12-Month Warranty
Nationwide Delivery
100+ Suppliers
Porsche 928 4.7L Engines
from £3,000 to £6,500
Rebuilt units from £3,000 · Common codes: M28.11, M28.21, M28.19, M28.20
Porsche 928 5.0L & 5.4L Performance Engines
from £4,500 to £9,500
Rebuilt units from £4,500 · Common codes: M28.41, M28.47, M28.49, M28.50
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 Porsche 928 Replacement Engineto Finding the Best Porsche 928 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
Average Market Prices
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↻ Last updated: 4 Aug 26, 9:26
Customer Reviews
Trusted by Porsche 928 Owners Across the UK
Rated 4.8 out of 5 by 1,081 verified customers who sourced reconditioned and used Porsche 928 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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Variants We Cover
Porsche 928 Engine ReplacementAll Variants Covered
Porsche 928 S4
M28.41 5.0L Petrol
Rebuilt Engines: £4,500-£7,500
Porsche 928 GTS
M28.49 5.4L Petrol
Rebuilt Engines: £6,500-£11,000
Porsche 928 GT
M28.47 5.0L Petrol
Rebuilt Engines: £5,500-£9,000
Porsche 928 S
M28.11/M28.21 4.7L Petrol
Rebuilt Engines: £3,500-£6,500
Porsche 928 Base Model
M28.01/M28.02 4.5L Petrol
Rebuilt Engines: £2,500-£5,000
Porsche 928 S2
M28.21 4.7L Petrol
Rebuilt Engines: £3,500-£6,500
Porsche 928 S4 Club Sport
M28.41 5.0L Petrol
Rebuilt Engines: £5,000-£8,000
Porsche 928 S4 SE
M28.41 5.0L Petrol
Rebuilt Engines: £4,500-£7,500
Porsche 928 US-Spec
M28.13/M28.43 5.0L Petrol
Rebuilt Engines: £3,000-£6,000
Porsche 928 Euro-Spec
M28.09/M28.21 4.7L Petrol
Rebuilt Engines: £3,500-£6,500
Porsche 928 Automatic Transmission
M28.10/M28.42 5.0L Petrol
Rebuilt Engines: £3,500-£7,500
Porsche 928 Manual Transmission
M28.11/M28.41 5.0L Petrol
Rebuilt Engines: £3,500-£7,500
Not sure which variant your Porsche 928 is- Enter your registration number above - we'll identify the exact sub-model, engine code and compatible replacement options instantly.
928
Engine Codes
Porsche 928 Engine CodesFull Technical Specifications & Replacement Guide
Every engine code fitted to the Porsche 928 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 Porsche 928 variants.
M28.01 - 4.5L Petrol
Main replacement demand comes from timing-chain, cooling-system and performance thermal-management faults.
Compatible variants
928 base model (manual)928 base model (automatic)
Avg. rebuilt price
£2,500 - £5,000
Supply only
Technical specifications
- Fuel type
- Petrol
- Engine size
- 4.5L
- Power output
- 237-240 hp
- Years fitted
- 1978-1986
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 Porsche 928 engine specialists. Every rebuilt engine comes with a minimum 12-month unlimited mileage warranty.
928
Common Problems
Porsche 928 Engine Problems - What It Costs to Fix & When Replacement Makes Sense
The Porsche 928's M28 V8 is robust but not immune to age-related failures. Thrust bearing wear, timing belt neglect, and oil leaks dominate UK replacement enquiries. Every rebuilt engine supplied through EngineMarket includes upgraded internal components designed to address the original failure point - plus a minimum 12-month unlimited mileage warranty. Use...
Thrust Bearing Failure - Why Porsche 928 Engines Develop End-Float Knock
Thrust Bearing Failure
Most affected vehicles
Porsche 928 SS2
Porsche 928 S, S2, S4, GT, GTS (1980-1995, M28.11, M28.21, M28.41, M28.47, M28.49)
Failure mileage range
80,000-120,000 miles
Typical failure window
Root cause
The crankshaft thrust washer wears over time, allowing axial movement that damages the bearing surface and creates a distinctive knocking noise under load.
Repair options & estimated costs (UK ranges)
| Repair tier | Dealer price | Specialist price | What it involves | Longevity / suitability |
|---|---|---|---|---|
| Minor - Inspection & Monitoring | £300 - £600 | £150 - £350 | End-float measurement, oil analysis, advisory report only | Not a repair; identifies risk. Suitable for low-mileage cars with early signs. |
| Intermediate - Bearing Replacement (Engine Out) | £4,500 - £7,500 | £2,500 - £4,500 | Engine removal, crankshaft inspection, new thrust bearing fitted, reassembly | Addresses the failure point. Viable if block and internals are otherwise sound. |
| Full Replacement - Rebuilt / Reconditioned Engine | £8,000 - £14,000 | £4,500 - £9,500 | Supply & fit of rebuilt M28 unit with upgraded thrust components, bench-tested, 12-month warranty | Most reliable long-term solution. Recommended for high-mileage or heavily worn engines. |
Our recommendation
On a Porsche 928 valued at £15,000-£40,000, a full rebuilt engine with upgraded thrust components offers the best balance of cost and longevity. If your car is lower mileage and otherwise pristine, an intermediate bearing replacement by a Porsche specialist may suffice-but budget for potential follow-on work.
Compare rebuilt M28.41/M28.49 engine prices for your Porsche 928Replacement Engine Options
Porsche 928 Engine TypesOptions, Costs & What to Expect
Every Porsche 928 engine type is available through our UK network, with typical price ranges based on variant, engine code and budget.
Porsche 928 Reconditioned Engines (Recon)£3,500 - £7,000((supply only))
Porsche 928 Rebuilt Engines£4,500 - £9,500((supply only))
Porsche 928 Used Engines£1,800 - £4,500((supply only))
Porsche 928 Remanufactured Engines£7,000 - £12,000((supply only))
Porsche 928 Refurbished Engines£2,500 - £5,500((supply only))
Compare Porsche 928 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 928 within hours.
Engine Sizes
Porsche 928 Engines by SizeFind the Right Displacement for Your Variant
Every displacement fitted to the Porsche 928 in the UK is listed below, with compatible engine codes, production years and common failure notes to help you identify the right replacement.
The original 4.5L M28.0x SOHC V8 powered the first-generation 928 from 1978-1979, establishing Porsche's front-engine GT formula with smooth, torquey character and aluminium construction.
⚙
Engine Code(s)
M28.01, M28.02, M28.03, M28.04
▣
Compatible Models (UK)
928 base model (manual/auto, 1978-1979), 928 US-spec
ϟ
Power output
Verified by registration
△
Common Failure Points
Timing chain tensioner wear, K-Jetronic fuel distributor faults, oil leaks from ageing gaskets
Production Years: 1979-1980
Compare Porsche 928 4.5L petrol engine pricesFuel Type
Porsche 928 Engines by Fuel Type
Choose your Porsche 928 engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from early 4.5L SOHC to final 5.4L DOHC units.
Porsche 928 Petrol Engines
PetrolEvery Porsche 928 sold in the UK was petrol-powered, spanning four displacements and SOHC to DOHC architectures across 1978-1995 production.
Common Porsche 928 Petrol Engine Families
- •M28.0x - 4.5L SOHC 16v (1978-1980); robust but ageing K-Jetronic system requires specialist attention.
- •M28.1x/2x - 4.7L SOHC 16v (1980-1986); thrust bearing wear is the dominant replacement driver.
- •M28.4x - 5.0L/5.4L DOHC 32v (1987-1995); high performance but timing belt and thrust bearing critical.
Found In
- •First generation (1978-1979) - M28.01/02/03/04
- •S/S2 generation (1980-1986) - M28.11/12/19/20/21/22
- •S4/GT/GTS generation (1987-1995) - M28.41/42/43/44/47/49/50
Known For
- •Smooth, torquey aluminium V8 character defining the classic GT experience
- •Thrust bearing failure risk across all M28 variants from 80k+ miles
- •Timing belt critical on DOHC units; interference design demands strict service intervals
Typical Petrol Models
- •928 base model
- •928 S / S2
- •928 S4 / S4 Club Sport / S4 SE
Porsche 928 Petrol Engines
PetrolEvery Porsche 928 sold in the UK was petrol-powered, spanning four displacements and SOHC to DOHC architectures across 1978-1995 production.
Common Porsche 928 Petrol Engine Families
- •M28.0x - 4.5L SOHC 16v (1978-1980); robust but ageing K-Jetronic system requires specialist attention.
- •M28.1x/2x - 4.7L SOHC 16v (1980-1986); thrust bearing wear is the dominant replacement driver.
- •M28.4x - 5.0L/5.4L DOHC 32v (1987-1995); high performance but timing belt and thrust bearing critical.
Found In
- •First generation (1978-1979) - M28.01/02/03/04
- •S/S2 generation (1980-1986) - M28.11/12/19/20/21/22
- •S4/GT/GTS generation (1987-1995) - M28.41/42/43/44/47/49/50
Known For
- •Smooth, torquey aluminium V8 character defining the classic GT experience
- •Thrust bearing failure risk across all M28 variants from 80k+ miles
- •Timing belt critical on DOHC units; interference design demands strict service intervals
Typical Petrol Models
- •928 base model
- •928 S / S2
- •928 S4 / S4 Club Sport / S4 SE
Not sure which fuel type your Porsche 928 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 928 specialists.
Engine YearsGet quotes for 1978-1979 Porsche 928 replacement engines →
Porsche 928 Engines by YearWhat Was Fitted & WhenPorsche 928 Engines by Year - What Was Fitted & When
This timeline covers all major engine changes across the Porsche 928's 1978-1995 production run, organised so owners can quickly identify their engine and compare rebuilt prices from UK specialists.
⚙Key Changes
- ✓Launch of Porsche 928 with all-new M28.01 4.5L SOHC V8
- ✓Introduction of K-Jetronic mechanical fuel injection
- ✓Aluminium block and heads for weight savings and refinement
▣Main Engines
M28.01- 4.5L petrol (base manual/auto)
M28.02- 4.5L petrol (US auto)
▰Popular Models
- •Porsche 928 base model
- •Porsche 928 US-spec
🔧Known For
- ✓Smooth, torquey character defining the classic GT experience
- ✓Timing chain tensioner wear on early units
- ✓K-Jetronic requires specialist calibration knowledge
Engine Codes Covered:
M28.01M28.02Not sure which year your Porsche 928 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 Porsche 928 specialists.
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