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Porsche 928 M28 V8 Specialist Engine ReplacementCompare 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.

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Porsche 928 4.5L M28.0x engine - M28.01 M28.03 rebuilt reconditioned UK
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

Porsche 928 4.7L M28.11 M28.21 engine - rebuilt reconditioned UK
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 S4 GT GTS M28.41 M28.47 M28.49 engine - rebuilt reconditioned UK specialist
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

Porsche 928 engine replacement UK - compare reconditioned and rebuilt engine prices
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How It Works

3 Simple Stepsto Finding the Best Porsche 928 Replacement Engine

12-Month Warranty
Supply & Fit Available
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Most replacements completed within 3-5 days.

Engine Intelligence

Porsche 928 Engines - Codes, Common Failures & Replacement Costs

The cards below cover the main engines fitted to the Porsche 928 in the UK, including documented failure causes, variant production years, and typical rebuilt engine costs based on current UK market data.

Porsche 928 engine intelligence reference

M28.41

Production History

  • 928 S4 (manual) - 1987-1991
  • 928 S4 Club Sport - 1988
  • 928 S4 SE - 1989-1991

Known Failures

  • Thrust bearing failure - crankshaft axial play develops from 80k+ miles, causing knock and potential catastrophic damage.
  • Timing belt wear - interference engine; belt failure causes valve-to-piston contact requiring full rebuild.
  • Oil leak from cam cover gaskets - common on high-mileage units, leads to consumption and smoke.

Specs

Petrol · 5.0L · 316-320hp · Naturally Aspirated

Replacement Cost

Typical UK rebuilt engine: £4,500-£7,500 (supply only)

M28.49

Production History

  • 928 GTS (manual) - 1992-1995

Known Failures

  • Thrust bearing failure - same design vulnerability as earlier M28 engines; monitor for end-float knock.
  • Rear main seal leak - common on high-mileage GTS units; labour-intensive to address.
  • LH-Jetronic fuel injection faults - ageing sensors and wiring cause running issues on 30+ year-old systems.

Specs

Petrol · 5.4L · 345-350hp · Naturally Aspirated

Replacement Cost

Typical UK rebuilt engine: £6,500-£11,000 (supply only) Estimated from comparable M28.49 units - actual quotes may vary.

M28.01

Production History

  • 928 base model (manual) - 1978-1979
  • 928 base model (auto) - 1978-1979

Known Failures

  • Timing chain tensioner wear - early SOHC design; slack causes rattles and potential jump at high mileage.
  • Oil consumption from valve stem seals - typical on 40+ year-old units; blue smoke on overrun.
  • K-Jetronic fuel distributor issues - mechanical injection requires specialist calibration; hard starting common.

Specs

Petrol · 4.5L · 237-240hp · Naturally Aspirated

Replacement Cost

Typical UK rebuilt engine: £2,500-£5,000 (supply only) Estimated from comparable early M28 units - actual quotes may vary.

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Variants We Cover

Porsche 928 Engine ReplacementAll Variants Covered

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.

Engine Codes

Porsche 928 Engine Codes

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.

Can't find your 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.

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Common Problems

Porsche 928 Engine Problems

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Save vs Main Dealer Price

Disclaimer: All prices are indicative UK market ranges based on historical quote data and repair requests from our network of engine specialists. Dealer pricing is estimated based on published main dealer labour rates and genuine OEM parts pricing. Specialist pricing reflects actual quote data from EngineMarket's UK network. Actual costs vary depending on damage severity, vehicle condition, variant, and workshop location within the UK. Use our free comparison tool to get tailored quotes for your specific Porsche 928 and engine code. Every engine supplied through EngineMarket carries a minimum 12-month unlimited mileage warranty - always confirm exact terms with your chosen supplier.

Replacement Engine Options

Porsche 928 Replacement Engine Types

Every Porsche 928 engine type is available through our UK network, with typical price ranges based on variant, engine code and budget.

Porsche 928 Refurbished EnginesTargeted repair of specific faults like oil leaks or sensor issues; cost-effective for engines otherwise in good condition.
Typical Price
£2,500 - £5,500
(supply only)
View refurbished Porsche 928 engine options
Refurbished

Refurbished Porsche 928 engines receive focused attention on documented faults such as seal replacement, sensor renewal or gasket refresh without full strip-down.

  • Suitable for engines with isolated, diagnosable issues
  • Faster turnaround than full rebuild options
  • Warranty covers refurbished components only; confirm scope
Typical Price
£2,500 - £5,500
(supply only)
View refurbished Porsche 928 engine options

All rebuilt engines include a minimum 12-month 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
PRODUCTION YEARS1979-1980
Common Failure Points

Timing chain tensioner wear, K-Jetronic fuel distributor faults, oil leaks from ageing gaskets

Compare Porsche 928 4.5L petrol engine prices

Not sure which engine size your Porsche 928 needs- Enter your registration number above - we'll identify the exact displacement, engine code and compatible replacement options instantly. All engines supplied through EngineMarket include a minimum 12-month unlimited mileage warranty from UK Porsche 928 specialists.

Fuel 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.

Every 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
LH-Jetronic injection on late models requires specialist diagnostic expertise
Typical Petrol Models
928 base model928 S / S2928 S4 / S4 Club Sport / S4 SE928 GT928 GTS
Compare Porsche 928 Petrol engine prices

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 Years

Porsche 928 Engines by YearWhat 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.

1978 - 1979 - First Generation Launch
Major Engine Change
The original 928 debuted with Porsche's first production V8: a 4.5L SOHC aluminium unit establishing the front-engine GT formula.
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
Known For
Smooth, torquey character defining the classic GT experience
Timing chain tensioner wear on early units
K-Jetronic requires specialist calibration knowledge
Main Engines
M28.01 - 4.5L petrol (base manual/auto)
M28.02 - 4.5L petrol (US auto)
Engine Codes Covered
M28.01M28.02
Popular Models
Porsche 928 base model
Porsche 928 US-spec
Common Replacement Enquiries
Get quotes for 1978-1979 Porsche 928 replacement engines
FAQ

Porsche 928 Engine ReplacementFrequently Asked Questions

How much does a Porsche 928 engine replacement cost in the UK-

Typical rebuilt Porsche 928 engine prices range from £2,500 for early 4.5L units to £11,000 for final 5.4L GTS engines, supply only. Supply & fit adds £1,200-£2,800 labour.

  • Early 4.5L M28.0x rebuilt: £2,500-£5,000 supply only
  • S4 5.0L M28.41 rebuilt: £4,500-£7,500 supply only
  • GTS 5.4L M28.49 rebuilt: £6,500-£11,000 supply only
  • Supply & fit labour typically adds £1,200-£2,800
Compare Porsche 928 engine replacement quotes today

What is the most reliable Porsche 928 engine code-

The M28.21 (4.7L S2 Euro manual) is often cited as the most balanced for reliability and performance, though all M28 engines require thrust bearing monitoring.

  • M28.21 offers strong power with mature SOHC design
  • All M28 engines share thrust bearing vulnerability from 80k miles
  • Regular oil changes and timing belt service critical for longevity
  • DOHC M28.4x units demand stricter maintenance discipline
Get quotes for M28.21 Porsche 928 engine replacement

Can I upgrade my Porsche 928 to a later engine code-

Yes, S4/GTS engine swaps into earlier chassis are possible but require specialist expertise for ECU, wiring, and mounting compatibility.

  • M28.41 into pre-S4 chassis needs ECU and harness adaptation
  • Mounting points largely consistent across M28 family
  • Specialist fabrication may be needed for ancillaries and exhaust
  • Budget £1,500-£3,000 additional for integration work
Enquire about Porsche 928 engine swap compatibility

How long does a Porsche 928 engine replacement take-

Supply-only engines typically dispatch in 2-4 weeks; supply & fit installations require 3-5 days workshop time plus parts lead time.

  • Rebuilt engines: 2-4 week build time from UK specialists
  • Used engines: 3-7 days if in stock with breaker network
  • Supply & fit installation: 3-5 days workshop labour
  • Allow extra time for ECU adaptation and road testing
Book Porsche 928 engine supply & fit appointment

Do Porsche 928 replacement engines come with a warranty-

Yes, all engines supplied through EngineMarket include a minimum 12-month unlimited mileage warranty; terms vary by supplier and engine condition.

  • Rebuilt/remanufactured: typically 12-month unlimited mileage
  • Reconditioned: 12-month on replaced components
  • Used: typically 3-6 months; confirm scope with supplier
  • Warranty covers parts; labour coverage varies by supply & fit agreement
Compare Porsche 928 engine warranty options

What's the difference between rebuilt, reconditioned, and remanufactured Porsche 928 engines-

Rebuilt engines are fully stripped and upgraded to address known failures; reconditioned focuses on worn parts; remanufactured matches original factory specifications.

  • Rebuilt: full strip, upgraded thrust/timing components, best value
  • Reconditioned: clean, measure, replace worn parts only
  • Remanufactured: factory-spec tolerances, new/OEM parts throughout
  • All include warranty; choose based on budget and intended use
Compare Porsche 928 rebuilt vs reconditioned engine options

Will a replacement Porsche 928 engine pass MOT emissions-

Yes, if the replacement matches the original specification and catalytic converter/O2 sensors are functional; specialists ensure compliance during fitment.

  • Engine code must match original for emissions certification
  • Catalytic converter and O2 sensors must be operational
  • LH-Jetronic systems require correct calibration for clean running
  • Rebuilt engines from UK specialists are configured for MOT compliance
Get quotes for MOT-compliant Porsche 928 engine replacement

How do I find my Porsche 928 engine code-

The engine code is stamped on the block near the distributor or on the VIN plate; enter your registration above for instant DVLA verification.

  • Locate stamp on engine block near distributor drive
  • Cross-reference with VIN plate in engine bay or door jamb
  • M28.xx format: e.g., M28.41 for S4, M28.49 for GTS
  • Our registration lookup instantly confirms code and compatibility
Use our Porsche 928 engine code lookup tool

Should I repair my Porsche 928 engine or replace it-

If thrust bearing knock, timing belt failure, or multiple major leaks are present, replacement often proves more cost-effective than incremental repairs.

  • Thrust bearing failure: replacement usually better value than bearing-only repair
  • Timing belt snap: rebuilt engine avoids hidden valve/piston damage risk
  • Multiple oil leaks: comprehensive rebuild addresses all sealing points at once
  • Get comparative quotes before deciding; factor in car value and intended use
Compare Porsche 928 engine repair vs replacement costs

Are Porsche 928 engines still available for purchase in the UK-

Yes, rebuilt, reconditioned and used Porsche 928 engines are available through our UK specialist network; availability varies by engine code and condition.

  • M28.41 (S4) and M28.49 (GTS) have strongest specialist rebuild support
  • Used engines depend on breaker network stock; act quickly when available
  • Lead times: 2-4 weeks for rebuilt, 3-7 days for in-stock used units
  • All suppliers vetted for quality and warranty coverage
Check live Porsche 928 engine availability now

Why Choose Us

Why UK Porsche 928 Owners Trust EngineMarket

Join thousands of UK drivers who compare Porsche 928 engine prices through our network of trusted specialists - every rebuilt and reconditioned unit backed by a minimum 12-month unlimited mileage warranty and nationwide delivery.

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UK Engine Replacement Services for Porsche 928

Covering every variant from base 4.5L to final GTS 5.4L, with supply-only or full supply & fit available nationwide.

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