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REMANUFACTURED INJECTORDiesel Fuel Injectors

Warranty Policy

12-Month Warranty on All Remanufactured Injectors

Every Remanufactured Injector product includes a comprehensive 12-month warranty covering manufacturing defects and premature failure. UK-based support with hassle-free claims. Professional installation required. Quality tested to OEM specifications before dispatch.

This page explains what's covered, what's not, and how to make a claim if needed.

12-month warranty included

If it fails within 12 months, we replace it free — no questions, no hassle.

What does the diesel injector warranty cover?

Our 12-month warranty covers manufacturing defects, premature component failure, internal seal leaks, electrical faults, spray pattern abnormalities, and flow rate inconsistencies. The warranty applies to all remanufactured diesel injectors purchased from Remanufactured Injector when installed by a qualified mechanic with clean diesel fuel.

Our 2026 warranty terms have been expanded to cover the latest common rail technologies including piezo and solenoid injectors from all major manufacturers. We've also streamlined our claims process this year — most warranty claims are now processed within 3 working days.

This warranty policy is reviewed and updated regularly to reflect the latest industry standards (2026).

12 Month Warranty

Every remanufactured diesel injector we sell comes with a comprehensive 12-month warranty against manufacturing defects and premature failure.

What's Covered

Manufacturing defects
Premature component failure
Internal seal leaks
Electrical faults
Spray pattern abnormalities
Flow rate inconsistencies

Warranty Conditions

To maintain your warranty coverage, please ensure:

1

Professional Installation

Injectors must be installed by a qualified diesel specialist.

2

Correct Engine Code Match

The injector must be installed in a vehicle matching the engine code confirmed at purchase.

3

Clean Fuel System

The fuel system must be clean and free from contamination.

4

Quality Diesel Fuel

Use clean, quality diesel fuel. Contaminated fuel voids the warranty.

5

No Modifications

The injector must not be modified, tampered with, or disassembled.

What's NOT Covered

Damage from fuel contamination (water, debris, wrong fuel)
Damage from incorrect installation
Installation in a vehicle not matching confirmed engine code
Normal wear and tear after 12 months
Damage from vehicle accidents or collisions
Consequential losses (labour costs, vehicle downtime, towing)
Injectors modified or tampered with

Engine Code Validation for Warranty Claims

When you make a warranty claim, we will verify:

  • The engine code you confirmed at checkout
  • The engine code of the vehicle installed in
  • That fitmentConfirmedByCustomer was true

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Helpful Links

Injector Testing ServiceReturns & Fitment GuaranteeFind Injector by Registration

How long do diesel injectors last?

Modern common rail diesel injectors typically last 150,000 to 200,000 miles under ideal conditions — but this depends heavily on fuel quality, driving style, and maintenance. Urban driving with frequent cold starts causes more wear than motorway miles. Contaminated or poor-quality diesel dramatically shortens injector life. OEM replacement injectors can cost £300-500 each, but professionally remanufactured injectors offer the same performance at 40-60% less. We test every injector to original manufacturer specifications and back each one with a comprehensive 12-month warranty.

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Diesel injector replacement cost UK

New OEM diesel injectors in the UK typically cost £250-600 per injector depending on make and type, plus £100-300 labour per injector for professional fitting. A full set of four can exceed £2,000 including labour. Remanufactured injectors offer significant savings at £100-250 each, with identical performance to new units. All our remanufactured injectors are tested to OEM specifications, include new seals and nozzles, and come with a 12-month warranty. For most vehicles, remanufactured injectors represent the best value without compromising quality.

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People Also Ask About Warranties

Are remanufactured diesel injectors reliable?
Yes, professionally remanufactured injectors are just as reliable as new OEM parts. Each injector is completely disassembled, ultrasonically cleaned, fitted with new seals and nozzles, and flow-tested to original manufacturer specifications. Our 12-month warranty demonstrates our confidence in quality.
What causes diesel injectors to fail prematurely?
The main causes are fuel contamination (water, debris), poor-quality diesel, missed fuel filter changes, and high mileage wear. Some engines have design issues that accelerate injector wear. Regular servicing with quality fuel significantly extends injector life.Read Maintenance Tips →
Do I need to replace all 4 injectors at once?
Not necessarily. We recommend professional testing first to identify which injector(s) are actually faulty. If one has failed from contamination, others may be fine. If failure is from age/wear, consider replacing in pairs or all four to save on future labour costs.Book Injector Testing →

Questions about your warranty?

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More warranty questions answered

Specific cover, fitting and resale questions from UK garages and resellers.

Do I need to register the warranty after purchase?

No registration is required. Your 12-month warranty starts automatically on the despatch date of your order — no cards, forms or activation steps. Keep your order email as proof of purchase and that's all we need if you ever raise a claim.

Does the warranty cover labour or fitting costs?

The warranty covers the cost of the replacement injector itself and our return-shipping arrangements. It does not cover third-party labour, removal/refitting at a garage, or consequential losses such as recovery or hire cars. We recommend fitting through a qualified diesel specialist to maintain cover.

Can the warranty transfer if I sell the vehicle?

Yes — the warranty is attached to the original order, not the vehicle owner. If the vehicle is sold within 12 months of injector purchase, the new owner can claim by providing the original order number and registration. The injector must remain in the same vehicle and engine as supplied.

Understanding Injector Replacement Costs

The cost to replace diesel injectors varies based on vehicle make and injector type. UK prices typically range from £150 to £350 per remanufactured injector, compared to £300 to £600 for new OEM units.

Remanufactured injectors offer the same performance and reliability as new parts at a significantly lower injector price UK customers appreciate. Each unit undergoes complete disassembly, ultrasonic cleaning, new seals and nozzles, and OEM-specification flow testing.

Our 12-month warranty covers manufacturing defects and premature failure when professionally installed. This protection provides peace of mind that new injectors simply match, not exceed.

View Injector PricesTest First — £20/injector

When to Test vs When to Replace

Test Injectors When...

  • • Engine warning light appeared but car still runs
  • • Fuel economy has dropped noticeably
  • • Rough idle or hesitation on acceleration
  • • You want to confirm which injector is faulty before buying
  • • Garage quotes full set replacement but you want a second opinion

Replace Injectors When...

  • • Testing has confirmed injector failure
  • • Visible damage, leaks, or Black Death carbon buildup
  • • High mileage (150,000+ miles) and multiple symptoms
  • • Previous repair attempt failed
  • • Vehicle is undriveable or will not start
✓

What Most Customers Choose

Testing first. At £20 per injector, testing identifies exactly which unit needs replacing — saving an average of £300-£600 by avoiding unnecessary full-set replacement. If testing confirms failure, we credit the test cost against your injector purchase.

Is It Worth Replacing Diesel Injectors?

Yes, replacing faulty diesel injectors is almost always worth it for vehicles you plan to keep. A single failed injector can cause engine damage costing thousands in repairs – unburnt fuel washes cylinder walls, dilutes oil, and can damage turbochargers. Early replacement prevents these cascading failures.

Remanufactured injectors offer the best value: OEM performance at 40-60% less than new. With our 12-month warranty covering defects and premature failure, you get peace of mind without the new-part price tag. Most customers report improved fuel economy of 5-15% after replacing worn injectors.

Get your injectors tested first →Mercedes OM651 injectors →View all injectors →

How Long Should Remanufactured Injectors Last?

Quality remanufactured diesel injectors typically last 80,000-150,000 miles when properly installed and maintained. This is comparable to OEM new parts, which average 100,000-200,000 miles depending on driving conditions and fuel quality. Our injectors are tested to meet original manufacturer specifications.

Lifespan depends heavily on maintenance: regular fuel filter changes, quality diesel, and avoiding running the tank low all extend injector life. Vehicles used primarily for motorway driving typically see longer injector life than those used for short urban journeys where carbon buildup is more common.

Injector maintenance tips →Ford TDCi injector lifespan →Shop warranted injectors →

Quality assurance is essential when purchasing remanufactured diesel injectors. At Remanufactured Injector, every unit undergoes rigorous flow testing and calibration before dispatch, backed by our comprehensive 12-month warranty for complete peace of mind.

tested by Remanufactured Injector specialists

Related Injector Resources

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Professional injector testing

£20 per injector diagnostics

Browse warranted injectors

All parts include 12-month cover

This guide is updated regularly to reflect the latest injector data and testing standards.

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