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Aston Martin DB4 3.7L Classic Engine SpecialistRebuild & Restore

Get specialist quotes from UK Aston Martin DB4 classic engine experts. Compare rebuilt & restored 3.7L straight-six engines for DB4 to DB4 GT Zagato. Get specialist quotes for your DB4.

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Aston Martin DB4 3.7L standard engine - 370/ 370/101 rebuilt reconditioned UK
DB4 3.7L Standard Engines- from £15,000 to £25,000

Rebuilt units from £15,000

Common codes: 370/, 370/101, 370/469

Aston Martin DB4 Vantage /SS engine - /SS /SS/101 rebuilt reconditioned UK specialist
DB4 Vantage /SS Engines- from £25,000 to £40,000

Rebuilt units from £25,000

Common codes: /SS, /SS/101, DB4/SS

Aston Martin DB4 GT Zagato engine - 400/ GT/0188/L rebuilt reconditioned UK specialist
DB4 GT & Zagato Engines- from £40,000 to £75,000

Rebuilt units from £40,000

Common codes: 400/, GT/0188/L, Z-prefix

Aston Martin DB4 engine replacement UK - compare reconditioned and rebuilt engine prices
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Engine Intelligence

Aston Martin DB4 Engines - Codes, Common Failures & Replacement Costs

The cards below cover the Tadek Marek 3.7L inline-six engines fitted to the Aston Martin DB4 in the UK, including documented failure causes, variant production years, and typical rebuilt engine costs based on current UK market data.

Aston Martin DB4 engine intelligence reference

370/

Production History

  • DB4 Series I (1958-1961)
  • DB4 Series II (1961-1962)
  • DB4 Series III (1962-1963)
  • DB4 Series IV (1963)
  • DB4 Series V (1963)

Known Failures

  • Timing chain stretch - Marek design tensioner wear causes rattle and potential failure from 60k miles.
  • Alloy block liner corrosion - wet liner electrolytic damage unique to aluminium construction.
  • Oil pressure loss - bearing wear on high-mileage units without regular servicing.

Specs

Petrol · 3.7L · 240hp · Naturally Aspirated

Replacement Cost

Typical UK rebuilt engine: £15,000-£25,000 (supply only)

/SS

Production History

  • DB4 Vantage Series II (1961-1962)
  • DB4 Vantage Series III (1962-1963)
  • DB4 Vantage Series IV (1963)

Known Failures

  • Triple SU carburettor synchronization - fuel delivery imbalance causes performance loss.
  • Timing chain stretch - high-output tuning accelerates tensioner wear on /SS units.
  • Overheating under load - increased compression demands robust cooling system maintenance.

Specs

Petrol · 3.7L · 266hp · Naturally Aspirated

Replacement Cost

Typical UK rebuilt engine: £25,000-£40,000 (supply only)

400/

Production History

  • DB4 GT (1959-1963)
  • DB4 GT Zagato (1960-1963)

Known Failures

  • Twin-plug ignition wear - dual distributor maintenance critical for competition-spec reliability.
  • High-compression piston ring wear - 9.7:1 ratio demands premium fuel and careful break-in.
  • Alloy block liner corrosion - structural vulnerability shared across all DB4 aluminium engines.

Specs

Petrol · 3.7L · 302hp · Naturally Aspirated

Replacement Cost

Typical UK rebuilt engine: £40,000-£75,000 (supply only) Estimated from comparable 400/ units - actual quotes may vary.

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Variants We Cover

Aston Martin DB4 Engine ReplacementAll Variants Covered

Not sure which variant your Aston Martin DB4 is- Enter your registration number above - we'll identify the exact sub-model, engine code and compatible replacement options instantly.

Engine Codes

Aston Martin DB4 Engine Codes

Every engine code fitted to the Aston Martin DB4 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.

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 Aston Martin DB4 engine specialists. Every rebuilt engine comes with a minimum 12-month unlimited mileage warranty.

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Common Problems

Aston Martin DB4 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 Aston Martin DB4 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

Aston Martin DB4 Replacement Engine Types

Every Aston Martin DB4 engine type is available through our UK network with typical price ranges based on variant, engine code and restoration grade.

Aston Martin DB4 Refurbished EnginesPartial refresh of DB4 engine addressing specific failures like timing chain or cooling system without full strip.
Typical Price
£12,000 - £22,000
(supply only)
View refurbished Aston Martin DB4 engine options
Refurbished

Refurbished DB4 engines target specific known failures like timing chain stretch or liner corrosion without full disassembly.

  • Cost-effective solution for addressing single failure points
  • Includes warranty on replaced components only
  • Best for drivers maintaining original engine where possible
Typical Price
£12,000 - £22,000
(supply only)
View refurbished Aston Martin DB4 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 Aston Martin DB4 within hours.

Engine Sizes

Aston Martin DB4 Engines by SizeFind the Right Displacement for Your Variant

Every displacement fitted to the Aston Martin DB4 is listed below, with compatible engine codes, production years and common failure notes to help you identify the correct replacement.

The 3.7-litre Tadek Marek inline-six powered every UK-market DB4 from 1958-1963, evolving through five series with standard, Vantage and GT specifications. Its aluminium block with wet liners defined Aston Martin's post-war engineering, but requires specialist knowledge for authentic rebuilds.

ENGINE CODE(S)370, SS, 400, GT, 0188, L
COMPATIBLE MODELS (UK)Series I-V (1958-1963), Vantage (1961-1963), GT (1959-1963), GT Zagato
PRODUCTION YEARS1960-1963
Common Failure Points

Timing chain stretch, alloy block liner corrosion, oil pressure loss on high-mileage units

Compare Aston Martin DB4 3.7L petrol engine prices

Not sure which engine size your Aston Martin DB4 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 Aston Martin DB4 specialists.

Fuel Type

Aston Martin DB4 Engines by Fuel Type

Choose your Aston Martin DB4 engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from Series I to the ultra-rare GT Zagato.

Every UK-market DB4 was powered by the Tadek Marek 3.7L petrol inline-six, offered in standard, Vantage and GT specifications across five series and rare coachbuilt variants.

Common Aston Martin DB4 Petrol Engine Families
370/
standard output engine for Series I-V, most common replacement enquiry
/SS
Vantage-spec triple-carburettor unit, higher compression and performance tuning
400/
GT-spec twin-plug, high-compression competition engine for GT and Zagato models
Found In
DB4 Series I-V (1958-1963)
370/ standard engine
DB4 Vantage (1961-1963)
/SS performance engine
DB4 GT / GT Zagato (1959-1963)
400/ competition engine
Known For
Aluminium block with wet liners - lightweight but vulnerable to electrolytic corrosion
Timing chain stretch on original Marek tensioner design - preventative upgrade recommended
Numbers-matching authenticity critical for collector value - documentation essential
Specialist rebuilders required for authentic concours-grade restoration work
Typical Petrol Models
DB4 Series IDB4 Series VDB4 VantageDB4 GTDB4 GT Zagato
Compare Aston Martin DB4 Petrol engine prices

Not sure which fuel type your Aston Martin DB4 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 Aston Martin DB4 specialists.

Engine Years

Aston Martin DB4 Engines by YearWhat Was Fitted & When

This section covers all major engine changes across the DB4's 1958-1963 production timeline, organised so owners can quickly identify their engine and compare rebuilt prices from UK specialists.

1958 - 1961 - DB4 Series I Launch
Major Engine Change
The original DB4 introduced the Tadek Marek 3.7L aluminium inline-six, defining Aston Martin's post-war engineering philosophy.
Key Changes
Launch of DB4 with all-new Superleggera chassis and aluminium body
Introduction of 370/ engine code with 240hp output and wet-liner construction
Triple SU carburettors standard; Vantage option announced late in production
Known For
Groundbreaking lightweight aluminium construction
Early production teething issues with timing chain tensioners
Highly sought-after by collectors; numbers-matching critical for value
Coolant maintenance essential to prevent liner corrosion in aluminium block
Main Engines
370/ - 3.7L petrol (Series I standard)
Engine Codes Covered
370/370/101
Popular Models
Aston Martin DB4 Series I
Aston Martin DB4 Series I Left-Hand Drive Export
Common Replacement Enquiries
DB4 Series I engine replacement
370/ timing chain repair
DB4 aluminium block corrosion fix
Get quotes for 1958-1961 Aston Martin DB4 replacement engines
FAQ

Aston Martin DB4 Engine ReplacementFrequently Asked Questions

How much does an Aston Martin DB4 engine replacement cost in the UK-

A rebuilt Aston Martin DB4 engine typically costs £15,000-£75,000 depending on specification, with standard 370/ units at the lower end and GT Zagato 400/ engines at the premium. Prices reflect the specialist labour, authentic components and numbers-matching documentation required for this collector-grade model.

  • Standard 370/ rebuilt: £15,000-£25,000 supply only
  • Vantage /SS rebuilt: £25,000-£40,000 with performance certification
  • GT/Zagato 400/ rebuilt: £40,000-£75,000 with concours documentation
  • Supply & fit adds £3,500-£8,500 depending on chassis access complexity
  • Numbers-matching verification available for collector-grade restorations
Compare rebuilt Aston Martin DB4 engine prices from UK specialists

What engine codes were fitted to the Aston Martin DB4-

The Aston Martin DB4 used three primary engine codes: 370/ for standard models, /SS for Vantage performance variants, and 400/ for GT and GT Zagato competition specifications. All are 3.7-litre Tadek Marek aluminium inline-six engines with wet-liner construction.

  • 370/: 240hp standard output, fitted to Series I-V and Convertible
  • /SS: 266hp Vantage specification with triple SU HD8 carburettors
  • 400/: 302hp GT specification with twin-plug ignition and 9.7:1 compression
  • Chassis-specific suffixes like 370/101 denote early production units
  • Engine code verification essential for numbers-matching authenticity
Verify your Aston Martin DB4 engine code and get replacement quotes

What are the most common Aston Martin DB4 engine problems-

The Aston Martin DB4's aluminium-block 3.7L engine commonly suffers timing chain stretch, alloy block liner corrosion, and oil pressure loss on high-mileage units. These issues stem from the period engineering and require specialist knowledge to address authentically.

  • Timing chain stretch causes "Marek rattle"; preventative upgrade recommended at 50k miles
  • Electrolytic corrosion between aluminium block and iron liners requires specialist remediation
  • Oil pressure loss indicates bearing wear; stop driving immediately if knocking occurs
  • Overheating can cause irreversible aluminium block damage within minutes
  • Specialist rebuilders address these with upgraded components while preserving authenticity
Get quotes for Aston Martin DB4 engine replacement with failure-point upgrades

Can I upgrade my Aston Martin DB4 engine to Vantage or GT specification-

Upgrading an Aston Martin DB4 to Vantage or GT specification is technically possible but requires extensive modification, specialist tuning knowledge, and may impact numbers-matching authenticity critical for collector value. Most owners prefer period-correct rebuilds.

  • Vantage upgrade requires triple SU carburettors, higher-compression pistons, camshaft changes
  • GT specification needs twin-plug ignition, 9.7:1 compression, competition cooling
  • Numbers-matching documentation may be compromised; affects investment-grade valuation
  • Specialist consultation recommended before undertaking performance conversions
  • Authenticity verification services available through EngineMarket's specialist network
Speak to an Aston Martin DB4 specialist about authentic upgrade pathways

Is it worth rebuilding an Aston Martin DB4 engine or replacing it-

For collector-grade Aston Martin DB4s, a specialist rebuilt engine preserving numbers-matching authenticity typically offers better long-term value than used replacement. For drivers, a reconditioned unit may suffice if block integrity is confirmed.

  • Rebuilt engines address known failure points with upgraded components and warranty
  • Used DB4 engines are extremely rare; verify liner condition and compression before purchase
  • Numbers-matching documentation adds significant value to investment-grade restorations
  • Rebuild vs replace decision depends on intended use: concours, touring, or temporary fitment
  • EngineMarket specialists can assess your core and provide tailored rebuild vs replace advice
Compare Aston Martin DB4 rebuild vs replace costs with specialist consultation

How long does an Aston Martin DB4 engine replacement take-

An Aston Martin DB4 engine rebuild typically takes 8-16 weeks depending on specification, parts availability and numbers-matching documentation requirements. Supply-only units can be dispatched once completed; supply & fit scheduling depends on specialist garage availability.

  • Standard 370/ rebuild: 8-12 weeks from core receipt to dispatch
  • Vantage /SS or GT 400/ rebuild: 12-16 weeks due to specialist component sourcing
  • Numbers-matching verification and heritage documentation adds 2-4 weeks
  • Supply & fit installation typically requires 3-5 days at a marque-specialist garage
  • EngineMarket provides regular progress updates throughout the rebuild process
Get a timeline quote for your Aston Martin DB4 engine replacement

Will a replacement engine affect my Aston Martin DB4's collector value-

A numbers-matching rebuilt Aston Martin DB4 engine with proper documentation typically preserves or enhances collector value. Non-matching replacements may reduce investment-grade valuation but remain suitable for drivers and touring use.

  • Numbers-matching authenticity critical for concours and investment-grade DB4s
  • Rebuilt engines with upgraded components can improve reliability without compromising appearance
  • Heritage documentation and specialist certification support valuation transparency
  • Non-matching engines acceptable for drivers; disclose specification to future buyers
  • EngineMarket specialists provide authenticity verification services for collector restorations
Protect your Aston Martin DB4's value with numbers-matching engine replacement

Can I use modern unleaded fuel in my Aston Martin DB4 engine-

Modern unleaded fuel can be used in an Aston Martin DB4 engine if hardened valve seats are installed during rebuild. Original DB4 engines were designed for leaded fuel; unleaded compatibility requires specialist modification to prevent valve recession.

  • Original DB4 engines used soft valve seats requiring leaded fuel lubrication
  • Hardened valve seat inserts can be fitted during rebuild for unleaded compatibility
  • E10 ethanol-blend fuel not recommended; use E5 or ethanol-free where possible
  • Fuel system components like hoses and seals should be upgraded for modern fuels
  • Specialist rebuilders include unleaded compatibility as standard on DB4 rebuilds
Get quotes for unleaded-compatible Aston Martin DB4 engine rebuilds

Do you supply Aston Martin DB4 engines for export outside the UK-

Yes, EngineMarket's specialist network supplies rebuilt Aston Martin DB4 engines for worldwide export, with documentation for customs, heritage verification and international warranty coverage. Shipping and import duties are the buyer's responsibility.

  • Crated engine export available to EU, USA, Australia and other classic car markets
  • Heritage documentation and numbers-matching certificates prepared for customs
  • International warranty coverage arranged through specialist partner network
  • Buyer responsible for import duties, taxes and local registration requirements
  • EngineMarket coordinates logistics with specialist classic car shipping partners
Enquire about worldwide Aston Martin DB4 engine export options

How do I know which Aston Martin DB4 engine is right for my restoration-

Selecting the correct Aston Martin DB4 engine depends on your restoration goals: concours authenticity requires numbers-matching rebuilds with heritage documentation, while touring use may prioritise reliability upgrades. Enter your registration for instant variant and engine code verification.

  • Concours restorations: prioritise numbers-matching rebuilds with period-correct components
  • Touring drivers: consider reliability upgrades like duplex timing chain and unleaded compatibility
  • Investment-grade projects: engage specialist consultation before committing to rebuild scope
  • EngineMarket's DVLA-linked registration check instantly identifies your exact variant and engine code
  • Free specialist consultation available to discuss restoration goals and engine options
Speak to an Aston Martin DB4 engine specialist for personalised restoration advice

Why Choose Us

Why UK Aston Martin DB4 Owners Trust EngineMarket

Join thousands of UK drivers who compare Aston Martin DB4 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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Every garage and engine rebuilder in our network is vetted, rated, and reviewed by real Aston Martin DB4 owners.

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UK Engine Replacement Services for Aston Martin DB4

Covering every variant from Series I to GT Zagato, with supply-only or full supply & fit available nationwide.

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