Engines Market
Rx-7 Marketplace

Mazda RX-7 Engine ReplacementRebuilt & Performance Options Available

Get quotes from trusted UK Mazda RX-7 engine specialists. Compare rebuilt and performance reconditioned prices for 13B-REW - twin-turbo rotary covered. Find UK performance engine specialists.

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Mazda Rx-7 13B-REW twin-turbo rotary engine - 13B-REW 13B-MSP rebuilt reconditioned UK
13B-REW Twin-Turbo Rotary Engines- from £2,500 to £6,500

Rebuilt units from £2,500

Common codes: 13B-REW, 13B-MSP, 12A

Mazda Rx-7 12A naturally aspirated rotary engine - 12A 13B rebuilt reconditioned UK
12A Naturally Aspirated Rotary Engines- from £1,800 to £4,200

Rebuilt units from £1,800

Common codes: 12A, 13B, 13B-REW

Mazda Rx-7 apex seal rebuild specialist rotary engine - 13B-REW 12A rebuilt reconditioned UK specialist
Apex Seal Rebuild Specialist Rotary Engines- from £3,500 to £7,500

Rebuilt units from £3,500

Common codes: 13B-REW, 12A, 13B-MSP

Mazda Rx-7 engine replacement UK - compare reconditioned and rebuilt engine prices
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How It Works

3 Simple Stepsto Finding the Best Mazda Rx-7 Replacement Engine

12-Month Warranty
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Most replacements completed within 3-5 days.

Engine Intelligence

Mazda Rx-7 Engines - Codes, Common Failures & Replacement Costs

The cards below cover the main rotary engines fitted to the Mazda Rx-7 in the UK, including documented failure causes, variant production years, and typical rebuilt engine costs based on current UK market data.

Mazda Rx-7 engine intelligence reference

13B-REW

Production History

  • FD Type RZ - 1992-1996
  • FD Type RS - 1992-1998
  • FD Bathurst R - 1995
  • FD Series 5 - 1996-1998
  • FD Series 6 - 1999-2002

Known Failures

  • Apex seal wear - rotor tip seals degrade from 50k miles causing compression loss.
  • Rotor housing scoring - inadequate lubrication causes irreversible chamber damage.
  • Sequential turbo failure - primary/secondary turbo bearings wear from heat and oil starvation.

Specs

Petrol · 1.3L · 255-276hp · Twin-Turbocharged

Replacement Cost

Typical UK rebuilt engine: £2,500-£6,500 (supply only)

12A

Production History

  • FB Savanna RX-7 - 1978-1980
  • FB Series II - 1980-1983
  • FB GSL-SE - 1983-1985
  • FC Base/Naturally Aspirated - 1986-1991

Known Failures

  • Apex seal wear - rotor tip seals degrade from 60k miles causing compression loss.
  • Carbon buildup - port deposits restrict airflow and reduce performance on higher-mileage units.
  • Oil metering pump failure - inadequate apex seal lubrication causes premature wear.

Specs

Petrol · 1.3L · 100-135hp · Naturally Aspirated

Replacement Cost

Typical UK rebuilt engine: £1,800-£4,200 (supply only)

13B

Production History

  • FC GT - 1986-1989
  • FC GT-X - 1989-1991
  • FC Turbo II (naturally aspirated variants) - 1986-1991

Known Failures

  • Apex seal wear - rotor tip seals degrade from 60k miles causing compression loss.
  • Carbon buildup - port deposits restrict airflow and reduce performance.
  • Side seal wear - rotor side seals degrade causing oil consumption and compression loss.

Specs

Petrol · 1.3L · 146-160hp · Naturally Aspirated

Replacement Cost

Typical UK rebuilt engine: £2,000-£4,800 (supply only)

Customer Reviews

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Variants We Cover

Mazda Rx-7 Engine ReplacementAll Variants Covered

Not sure which variant your Mazda Rx-7 is- Enter your registration number above - we'll identify the exact sub-model, engine code and compatible replacement options instantly.

Engine Codes

Mazda Rx-7 Engine Codes

Every engine code fitted to the Mazda Rx-7 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 Mazda Rx-7 variants.

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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 Mazda Rx-7 engine specialists. Every rebuilt engine comes with a minimum 12-month unlimited mileage warranty.

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Common Problems

Mazda Rx-7 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 Mazda Rx-7 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

Mazda Rx-7 Replacement Engine Types

Every Mazda Rx-7 engine type is available through our UK network with typical price ranges based on variant, engine code and budget.

Mazda Rx-7 Refurbished EnginesMazda Rx-7 rotary engines receiving targeted repairs and component replacement based on detailed inspection findings.
Typical Price
£2,000 - £5,500
(supply only)
View refurbished Mazda Rx-7 engine options
Refurbished

Refurbished Mazda Rx-7 engines balance cost and reliability with focused repairs.

  • Only worn or damaged components replaced after inspection
  • Apex seals and critical wear items addressed as needed
  • Compression tested and backed by specialist warranty
Typical Price
£2,000 - £5,500
(supply only)
View refurbished Mazda Rx-7 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 Mazda Rx-7 within hours.

Engine Sizes

Mazda Rx-7 Engines by SizeFind the Right Displacement for Your Variant

Every displacement fitted to the Mazda Rx-7 is listed below, with compatible engine codes, production years and common failure notes to help identify your exact unit.

The Mazda Rx-7 exclusively used 1.3-litre twin-rotor Wankel engines across all generations, with the 12A, 13B and 13B-REW variants delivering 100-276hp depending on aspiration and tuning. This compact rotary design enabled the Rx-7's legendary weight distribution and handling balance.

ENGINE CODE(S)12A, 13B, 13B-REW
COMPATIBLE MODELS (UK)FB Savanna RX-7 (1978-1985), FC GT/GT-X/Turbo II (1986-1991), FD Type RZ/RS/Bathurst R
PRODUCTION YEARS1992-2002
Common Failure Points

Apex seal wear causing compression loss, rotor housing scoring from inadequate lubrication, sequential turbo failure on 13B-REW units

Compare Mazda Rx-7 1.3L petrol engine prices

Not sure which engine size your Mazda Rx-7 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 Mazda Rx-7 specialists.

Fuel Type

Mazda Rx-7 Engines by Fuel Type

Choose your Mazda Rx-7 engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from early FB classics to the latest FD performance variants.

Every Mazda Rx-7 was powered by petrol rotary engines, with the iconic 13B-REW twin-turbo defining the FD generation's performance credentials.

Common Mazda Rx-7 Petrol Engine Families
12A
FB/early FC naturally aspirated rotary (100-135hp), apex seal wear common
13B
FC naturally aspirated rotary (146-160hp), improved porting over 12A
13B-REW
FD sequential twin-turbo rotary (255-276hp), turbo and apex seal issues
Found In
FB Generation (1978-1985)
12A engine
FC Generation (1986-1991)
12A, 13B engines
FD Generation (1992-2002)
13B-REW engine
Known For
Unique twin-rotor Wankel design with high-revving character
Apex seal wear requiring specialist rebuild knowledge
Strong enthusiast community and parts availability in UK
Typical Petrol Models
Type RZType RSBathurst RTurbo IIGT-X
Compare Mazda Rx-7 Petrol engine prices

Not sure which fuel type your Mazda Rx-7 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 Mazda Rx-7 specialists.

Engine Years

Mazda Rx-7 Engines by YearWhat Was Fitted & When

This section covers all major engine changes across the Mazda Rx-7's production timeline from 1978-2002, organised so owners can quickly identify their engine and compare rebuilt engine prices from UK specialists.

1978 - 1985 - FB Generation: 12A Rotary Launch
Major Platform Change
The original Rx-7 introduced Mazda's lightweight twin-rotor Wankel engine to global markets.
Key Changes
FB generation launch with 12A naturally aspirated rotary engine
Lightweight chassis enabling balanced handling dynamics
Introduction to UK market via grey import channels
Known For
Simple naturally aspirated rotary design with good reliability
Apex seal wear emerging as primary failure mode from 60k miles
Strong enthusiast following for classic rotary character
Main Engines
12A - 1.3L petrol (Savanna RX-7, Series II, GSL-SE)
Engine Codes Covered
12A
Popular Models
Mazda Savanna RX-7
Mazda Series II
Mazda GSL-SE
Common Replacement Enquiries
Mazda Rx-7 12A engine replacement
Mazda Rx-7 apex seal rebuild
Mazda Rx-7 FB engine cost
Get quotes for 1978-1985 Mazda Rx-7 replacement engines
FAQ

Mazda Rx-7 Engine ReplacementFrequently Asked Questions

How much does a Mazda Rx-7 engine replacement cost in the UK-

Mazda Rx-7 engine replacement costs range from £1,800-£7,500 depending on engine type and condition. 13B-REW twin-turbo units command premium pricing due to complexity and demand.

  • 13B-REW twin-turbo rebuilt: £2,500-£6,500 supply only
  • Apex seal rebuild service: £900-£1,600 for early-stage failure
  • Supply-only pricing excludes installation labour costs
Compare rebuilt Mazda Rx-7 engine prices from UK specialists

Which Mazda Rx-7 engine is most reliable-

Naturally aspirated 12A and 13B engines from FB/FC generations prove more reliable due to simpler design without turbocharger stress.

  • 12A/13B NA engines typically reach 80k-120k miles with proper care
  • FD 13B-REW offers performance but higher failure risk from turbo complexity
  • Regular oil changes and two-stroke oil addition extend rotary lifespan
Find reliable Mazda Rx-7 engine options with warranty

What causes apex seal failure in Mazda Rx-7 engines-

Apex seals wear or fracture from inadequate lubrication, thermal stress or carbon buildup, causing compression loss and rough running.

  • Failure typically occurs between 50k-90k miles on rotary engines
  • Compression testing identifies early seal wear before catastrophic failure
  • Upgraded apex seals in rebuilt engines improve longevity
Get quotes for Mazda Rx-7 apex seal rebuild service

Are Mazda Rx-7 FD turbo engines prone to failure-

Yes, the 13B-REW sequential turbo system commonly fails between 70k-110k miles due to bearing wear and oil starvation.

  • Primary turbo bearings wear from heat and inadequate oiling
  • Secondary turbo actuator and wastegate mechanisms fail with age
  • Turbo rebuild or full engine replacement are common solutions
Compare Mazda Rx-7 13B-REW turbo replacement prices

Should I rebuild or replace my Mazda Rx-7 engine-

Rebuild if damage is limited to apex seals with minimal housing scoring; replace for severe scoring, high mileage or turbo failure.

  • Apex seal-only rebuild: £900-£1,600, viable for early-stage failure
  • Full rebuilt engine: £2,500-£6,500, recommended for high-mileage units
  • Compression testing and housing inspection determine best path
Compare Mazda Rx-7 rebuild vs replacement options

What is the typical lifespan of a Mazda Rx-7 engine-

Well-maintained rotary engines can reach 80k-120k miles before major work, though apex seal wear often appears at 50k-90k miles.

  • Regular compression testing every 20k miles monitors engine health
  • Proper warm-up, quality oil and avoiding overheating extend life
  • Rebuilt engines with upgraded components often exceed original lifespan
Find Mazda Rx-7 engines with proven longevity records

What maintenance does a Mazda Rx-7 rotary engine require-

Rotary engines need frequent oil checks, two-stroke oil addition for apex seal lubrication, and regular compression testing.

  • Check and top up oil levels at every fuel fill-up
  • Add two-stroke oil to fuel to lubricate apex seals
  • Replace spark plugs more frequently than piston engines
Get Mazda Rx-7 maintenance packages from UK specialists

Is remapping a Mazda Rx-7 13B-REW engine safe-

Conservative remaps can be safe with supporting modifications, but aggressive tuning accelerates apex seal wear and turbo failure.

  • Professional rotary-specialist tuning essential for 13B-REW
  • Upgraded cooling and oiling recommended with any power increase
  • Naturally aspirated 12A/13B engines offer minimal remap gains
Enquire about Mazda Rx-7 performance tuning services

What's the difference between reconditioned and used Mazda Rx-7 engines-

Reconditioned engines undergo disassembly, cleaning and component replacement with warranty; used engines are as-removed with no guarantee.

  • Reconditioned: £2,500-£6,500, upgraded components, 12-month warranty
  • Used: £1,200-£3,500, no warranty, compression test recommended
  • Reconditioned offers better long-term value for collector vehicles
Compare reconditioned vs used Mazda Rx-7 engine prices

How do I find my Mazda Rx-7 engine code-

Enter your registration above for instant DVLA verification, or check the engine bay plate for factory engine code markings.

  • 13B-REW codes: FD generation twin-turbo variants
  • 12A/13B codes: FB/FC generation naturally aspirated variants
  • Engine code determines compatible replacement options and pricing
Verify your Mazda Rx-7 engine code instantly via registration

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Why UK Mazda Rx-7 Owners Trust EngineMarket

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UK Engine Replacement Services for Mazda Rx-7

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