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Renault K9K Engine - Replacement Cost, Problems & CompatibilityProblems & Compatibility
The 1.5-litre diesel engine fitted to most 2001-present Renault models, including the Clio, Megane, and Captur. Reconditioned Renault K9K units are available from £1,500 , with 730 UK replacement requests logged in 2025 .
Supply & Fit Available
12-Month Warranty
Nationwide Delivery
100+ Suppliers
Used from
£500
Reconditioned from
£1,500
Rebuilt from
£2,500
GB
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Quotes only from vetted UK engine specialists.
Key Specs
Renault K9K - Specifications at a Glance
Engine Code
K9K
Fuel
Diesel
Configuration
1.5L inline-4, single turbo
Power Output(s)
65-115 hp (depending on tune)
Years Produced
2001-Present
UK Models Fitted
8+ Renault models - full list in Compatibility below
2025 UK Replacement Requests
730
Replaced
F9Q (1.9 dCi)
Replaced By
N/A (Still in production for select markets)
Most Common Failure
Injector failure and turbocharger wear
Reconditioned Price Range
£1,500-£2,800 supply-only
Vetted UK specialists for K9K replacements
Minimum 12-month warranty on reconditioned and rebuilt options
Fitted To
Which Renault Models Use the K9K-
TAG: Fitted To
| Model | Generation/Chassis | Badge(s) | Years | Link |
|---|---|---|---|---|
 Renault Megane | Mk3 | 1.5 dCi | 2008-2016 | |
| Renault Megane | Mk4 | 1.5 dCi | 2016-2023 | |
| Renault Clio | Mk3 | 1.5 dCi | 2005-2012 | |
| Renault Clio | Mk4 | 1.5 dCi | 2012-2019 | |
| Renault Clio | Mk5 | 1.5 dCi | 2019-Present | |
| Renault Scenic | Mk3 | 1.5 dCi | 2009-2016 | |
| Renault Scenic | Mk2 | 1.5 dCi | 2003-2009 | |
| Renault Kadjar | Mk1 | 1.5 dCi | 2015-2022 | |
| Renault Captur | Mk2 | 1.5 dCi | 2019-Present | |
| Renault Laguna | Mk3 | 1.5 dCi | 2007-2015 |
02
Renault Megane
03
Renault Clio
04
Renault Clio
05
Renault Clio
06
Renault Scenic
07
Renault Scenic
08
Renault Kadjar
09
Renault Captur
10
Renault Laguna
CROSS-BRAND
K9K is documented across 10 BMW applications spanning Megane, Clio, Scenic, Kadjar, Captur, Laguna. Registration lookup confirms the exact suffix before quotes are sent.
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Not sure which engine your car has- Enter your registration above - we'll confirm your exact K9K fitment before any quotes are sent.
Prices
Renault K9K Engine Replacement Cost (UK)
Condition | Supply Only | Fitted (Independent Specialist) | Typical Warranty |
|---|---|---|---|
Used | £500-£1,200 | £890-£1,785 | 3-6 months |
Reconditioned | £1,500-£2,800 | £1,890-£3,385 | 12-24 months |
Rebuilt | £2,500-£3,800 | £2,890-£4,385 | 12-24 months |
The final cost of a Renault K9K engine replacement depends heavily on the specific sub-code and whether the turbocharger or injectors have already been addressed. Units sold without a recent injector or turbo service carry higher long-term risk. For a full breakdown of what is included in a proper rebuild, see our full reconditioned engine cost guide.
Labour Guide
Fitting a K9K typically takes 6-9 hours at £65/hr (independent) - confirm exact labour when comparing quotes.
Price Factors
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Common Problems
Renault K9K Engine Problems - What Actually Fails
Every engine has its weak points. Here are the known issues with the K9K, based on real-world data and verified failure patterns.
Verified issue focus: Injector failure and turbocharger wear.
1. Injector Failure and Swarf Contamination - 80,000-150,000 miles
1. Injector Failure and Swarf Contamination - 80,000-150,000 miles
Typical onset:
80,000-150,000 miles
What happens:
The K9K's piezoelectric injectors are susceptible to electrical faults and internal wear. When they fail, they can shed metallic swarf into the fuel system, contaminating the high-pressure pump and rail.
Repair vs replace:
Standalone injector replacement costs £300-£800, but if swarf has contaminated the high-pressure pump, a full Renault K9K engine replacement is often the only viable option to prevent recurring damage.
Read more about this issue
2. Turbocharger Failure and EGR Clogging - 80,000-150,000 miles
2. Turbocharger Failure and EGR Clogging - 80,000-150,000 miles
Typical onset:
80,000-150,000 miles
What happens:
Frequent short urban trips cause the EGR valve and DPF to clog, leading to overfuelling. This excess fuel and soot can overwhelm the turbocharger, causing actuator failure or bearing wear.
Repair vs replace:
A turbo replacement costs £600-£1,500. However, if the turbo failure is a symptom of chronic DPF/EGR blockage, addressing the root cause is mandatory, or the new turbo will fail rapidly.
Read more about this issue
Later revisions of the K9K (post-2012) feature improved injector sealing and more robust turbo actuators, making catastrophic failures less frequently reported, though strict oil change intervals remain critical .
Compare rebuilt K9K prices with the failure already addressed
Engine Variants
How to Confirm You Have the Renault K9K
The K9K engine code is stamped on a machined pad on the engine block, typically visible near the oil filter housing or on the timing cover. It is also clearly listed on your vehicle's V5C registration document under "Engine Capacity/Code" and can be verified via a VIN decode. Owners frequently confuse the K9K with the older F9Q (1.9 dCi) or the larger R9M (1.6 dCi). While they share similar layouts, the K9K has specific ECU mappings, turbo plumbing, and fuel system fitments. Fitting the wrong revision can lead to sensor mismatches and ECU faults. If your documentation shows F9Q, view the F9Q engine page. If it shows R9M, view the R9M engine page.
Not entirely sure- Enter your registration above - we'll confirm your exact K9K fitment before any quotes are sent.
Easily Confused
F9Q
- The larger 1.9-litre predecessor, known for a robust bottom end but heavier weight and higher fuel consumption than the K9K.
Alternative / Next-Gen Code
R9M
- The modern 1.6-litre replacement offering improved emissions and torque, though sharing similar DPF sensitivities in urban driving conditions.
Related JLR Variants
Nissan K9K
- The exact same 1.5 dCi architecture fitted to Nissan Qashqai and Juke models, sharing identical failure patterns, injector vulnerabilities, and replacement economics.
Confirm the exact K9K fitment
Not entirely sure- Enter your registration above - we'll confirm your exact K9K fitment before any quotes are sent.
Buying Guide
Buying a Replacement Renault K9K - What to Choose
Choosing the right replacement route depends on your budget, risk tolerance, and ownership goals. Here's a breakdown of your options.
Used:
A used Renault K9K engine is only advisable for low-value host vehicles and *only* if accompanied by documented proof that the injectors and turbo were recently serviced or replaced. Without this, the risk of swarf contamination or turbo failure is high.
Reconditioned:
A proper reconditioned Renault K9K engine is the most recommended choice. It should include refurbished or new injectors, a balanced turbocharger, and a cleared EGR/DPF system. This addresses the engine's core weaknesses while keeping costs below a full rebuild.
Rebuilt:
A full rebuild is justified for high-mileage examples or vehicles where the original block suffered catastrophic injector swarf damage. An upgraded rebuild should feature a new high-pressure fuel pump and revised turbo plumbing.
Supply & Fit Line:
Sourcing and fitting through our vetted network ensures your new K9K is installed by specialists familiar with Renault's diagnostic requirements, backed by a minimum 12-month warranty and nationwide delivery.
Vehicle Value Note:
For older hosts like the Megane Mk3 or Clio Mk3, current market values often sit between £1,500 and £6,000. Since a reconditioned Renault K9K supply-only starts at £1,500, the total fitted cost can approach or exceed the vehicle's value. In these cases, we strongly advise evaluating the scrap or part-exchange value before committing to a replacement.
Compare K9K Engine Prices Now
Related Engines
Engines Related to the Renault K9K
Explore engines that are closely related to the Renault K9K, including its predecessor, successor, and key family variants.
Predecessor
F9Q
- The larger 1.9-litre predecessor, known for a robust bottom end but heavier weight and higher fuel consumption than the K9K.
Successor
R9M
- The modern 1.6-litre replacement offering improved emissions and torque, though sharing similar DPF sensitivities in urban driving conditions.
Cross-Brand Twin
Nissan K9K
- The exact same 1.5 dCi architecture fitted to Nissan Qashqai and Juke models, sharing identical failure patterns, injector vulnerabilities, and replacement economics.
FAQ
Renault K9KFrequently Asked Questions
Question 1How much does a Renault K9K engine replacement cost-
A reconditioned Renault K9K engine costs between £1,500 and £2,800 for supply-only, with fitted costs typically ranging from £1,890 to £3,385. Used units start around £500 but carry a high risk of injector swarf contamination. Rebuilt units with upgraded components range from £2,500 to £3,800.
- Used units start around £500 but carry a high risk of injector swarf contamination.
- Rebuilt units with upgraded components range from £2,500 to £3,800.
Question 2What is the most common Renault K9K engine problem-
The most documented failure is injector failure leading to metallic swarf contamination in the high-pressure fuel system, typically occurring between 80,000 and 150,000 miles. Symptoms include hard starting, excessive smoke, and a distinct knocking sound. If the high-pressure pump is contaminated, a full Renault K9K engine replacement is often the only viable option.
- Symptoms include hard starting, excessive smoke, and a distinct knocking sound.
- If the high-pressure pump is contaminated, a full Renault K9K engine replacement is often the only viable option.
Question 3Which Renault models use the K9K engine-
The K9K 1.5 dCi was widely fitted across the Renault lineup from 2001 onwards. Check your exact model compatibility by entering your registration above.
- Key applications include the Clio, Megane, Captur, Scenic, Kadjar, and Laguna.
Question 4Should I buy a used or reconditioned Renault K9K-
A reconditioned Renault K9K is strongly recommended over a used unit due to the known injector and turbocharger vulnerabilities. Reconditioned units should include refurbished or new injectors, a balanced turbocharger, and a cleared EGR/DPF system. A used engine is only viable if it has low mileage and verifiable proof of recent injector servicing.
- Reconditioned units should include refurbished or new injectors, a balanced turbocharger, and a cleared EGR/DPF system.
- A used engine is only viable if it has low mileage and verifiable proof of recent injector servicing.
Question 5How do I know if my car has the K9K engine-
The engine code is stamped on the block near the oil filter housing and listed on your V5C registration document. It is often confused with the older F9Q (1.9 dCi) or the larger R9M (1.6 dCi), which have different ECU mappings and sensor fitments.
- It is often confused with the older F9Q (1.9 dCi) or the larger R9M (1.6 dCi), which have different ECU mappings and sensor fitments.
Question 6Can the Renault K9K be swapped with the Nissan 1.5 dCi-
Yes, the Renault K9K and Nissan 1.5 dCi are the exact same physical engine architecture. However, ECU mapping, sensor looms, and turbo plumbing can differ between the brands. A direct swap may require ECU remapping or loom adaptation by a specialist.
- However, ECU mapping, sensor looms, and turbo plumbing can differ between the brands.
- A direct swap may require ECU remapping or loom adaptation by a specialist.
Compare Renault K9K Engine Prices Today
Get a free, no-obligation price comparison for your exact Renault K9K engine. Our registration lookup confirms your vehicle's specific fitment before any quotes are sent, ensuring you receive accurate pricing. With reconditioned K9K units starting from £1,500, comparing takes two minutes and could save you hundreds on your replacement.
Vetted UK Specialists
Vetted UK specialists for K9K replacements
Minimum 12-Month Warranty
Minimum 12-month warranty on reconditioned and rebuilt options
Nationwide Delivery
Nationwide delivery plus supply and fit availability
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