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Nissan K9K Engine - Replacement Cost, Problems & CompatibilityProblems & Compatibility
The K9K is the 1.5-litre dCi diesel engine widely fitted to Nissan and Renault vehicles, including the Qashqai, Juke, and Note, from 2005 to 2018. Reconditioned Nissan K9K units are available from £1,500 , with 730 UK replacement requests logged for this engine family 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
Nissan K9K - Specifications at a Glance
Engine Code
K9K (Family: 830, 832, 836, 844, etc.)
Fuel
Diesel
Configuration
1.5L inline-4, turbocharged (dCi)
Power Output(s)
66 kW (90 hp) - 81 kW (110 hp) depending on tune
Years Produced
2005-2018
UK Models Fitted
3 primary Nissan models - full list in Compatibility below
2025 UK Replacement Requests
730 (Logged under Renault/Nissan K9K 1.5 dCi)
Replaced
1.9L dCi (F9Q series) in earlier applications
Replaced By
1.3L dCi (H5Ht series) and revised K9K 844/846
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 Nissan Models Use the K9K-
The K9K 1.5L dCi was the highest-volume diesel engine in Nissan's compact and subcompact lineup for over a decade, with the Qashqai representing the most frequent application in the UK market.
| Model | Generation/Chassis | Badge(s) | Years | Link |
|---|---|---|---|---|
 Nissan Qashqai | J10 / J11 | 1.5 dCi (90/110 hp) | 2007-2018 | |
| Nissan Juke | F15 | 1.5 dCi (90/110 hp) | 2010-2018 | |
| Nissan Note | E11 / E12 | 1.5 dCi (90 hp) | 2006-2018 |
02
Nissan Juke
03
Nissan Note
CROSS-BRAND
K9K is documented across 3 BMW applications spanning Nissan Qashqai, Nissan Juke, Nissan Note. Registration lookup confirms the exact suffix before quotes are sent.
Not sure which engine your car has?
Not sure which engine your car has- Enter your registration above - we'll confirm your exact K9K fitment before any quotes are sent.
Prices
Nissan 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 K9K replacement is heavily influenced by the condition of the fuel injectors and turbocharger, which are the two most common wear items on high-mileage 1.5 dCi units. A proper reconditioned K9K will include new or refurbished injectors, a cleaned or replaced DPF, and updated turbo seals. Always verify that the EGR system has been addressed, as carbon buildup is a primary driver of replacement demand. For a full breakdown of market rates and condition tiers, see our reconditioned engine cost guide.
Labour Guide
Fitting a Nissan K9K typically takes 6-9 hours at an independent specialist rate of £65/hr, resulting in a typical fitted premium of £390-£585 . Confirm exact labour when comparing quotes.
Price Factors
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Common Problems
Nissan 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 (Swarf Contamination & Electrical Faults) - 2005-2018 units
1. Injector Failure (Swarf Contamination & Electrical Faults) - 2005-2018 units
Typical onset:
80,000-150,000 miles
What happens:
The K9K's piezoelectric injectors are susceptible to wear, electrical faults, and contamination from metallic swarf in the fuel system. Symptoms include rough idling, excessive black smoke, difficulty starting, and a noticeable loss of power. If an injector leaks, it can wash down the cylinder walls, diluting the engine oil and leading to rapid bearing wear.
Repair vs replace:
While a single faulty injector can be replaced, it is common for multiple injectors to fail in sequence on high-mileage units. If oil dilution has occurred, a full engine replacement is often the most reliable and cost-effective long-term solution. Read our full injector failure guide.
Read more about this issue
2. Turbocharger Failure and Overfuelling - 2005-2018 units
2. Turbocharger Failure and Overfuelling - 2005-2018 units
Typical onset:
80,000-150,000 miles
What happens:
The K9K turbocharger relies on a precise, clean oil supply. If the engine has been run low on oil (sometimes masked by earlier injector leak diluting the sump), the turbo bearings can fail. This leads to blue exhaust smoke, significant loss of power, and metallic rattling from the turbine housing. Overfuelling from a stuck injector can also over-speed and destroy the turbo.
Repair vs replace:
A failing turbo can sometimes be replaced independently. However, if oil starvation or swarf contamination has occurred, debris may have circulated through the K9K oil galleries, necessitating a full unit replacement to prevent immediate secondary failure of the new turbo. Read our full turbocharger failure guide.
Read more about this issue
3. EGR Clogging and DPF Blockage
3. EGR Clogging and DPF Blockage
Typical onset:
80,000-150,000 miles
What happens:
As a compact diesel frequently used in urban environments, the K9K is prone to EGR valve clogging and Diesel Particulate Filter (DPF) blockage. This prevents proper exhaust flow, triggering engine management lights and forcing the vehicle into "limp mode".
Repair vs replace:
A DPF clean or EGR service can provide temporary relief. However, if the clogging has caused excessive backpressure, it can lead to turbocharger failure, necessitating a full unit replacement. Read our full DPF failure guide.
Read more about this issue
Later revisions of the K9K family (such as the 844 and 846 variants) feature improved injector seals and more robust turbo actuators, significantly reducing the incidence of these failures .
Compare rebuilt K9K prices with the failure already addressed
Engine Variants
K9K Sub-Codes Explained - Which One Is in Your Car-
INTRO: The K9K 1.5 dCi is a massive family of engines. While they share the same core 1.5L block, they differ by power output, emission standard (Euro 4/5/6), and specific vehicle calibration. Identifying your exact sub-code is critical when sourcing a replacement. - Fitted to: Early Nissan Qashqai J10. - Key technical difference: Pre-DPF or early DPF application, simpler turbo actuator. - Sub-code-specific failure note: Shares the family injector and turbo failure pattern. - Interchange note: Not a straight swap with later Euro 5/6 variants due to ECU mapping and DPF plumbing differences. - Fitted to: Nissan Juke F15, later Qashqai J10/J11. - Key technical difference: Higher output calibration, mandatory DPF fitment. - Sub-code-specific failure note: DPF clogging is more prevalent due to urban Juke usage patterns. - Interchange note: Requires matching DPF and ECU software; loom connectors may differ from 830. - Fitted to: Nissan Note E11/E12, lower-spec Qashqai. - Key technical difference: Lower boost pressure, smaller turbocharger. - Sub-code-specific failure note: Shares the family failure pattern above. - Interchange note: Physically interchangeable with 832 in some cases, but will trigger ECU limp mode without remapping. - Fitted to: Late-model Qashqai J11, Juke F15 facelift. - Key technical difference: Revised injector seals, updated turbo actuator, AdBlue/SCR integration on some applications. - Sub-code-specific failure note: Significantly more robust; injector and turbo failures are far less reported after these revisions.
The K9K sub-code is stamped directly onto the engine block, typically on a machined pad near the bellhousing or above the oil filter housing. It is also clearly listed on your vehicle's V5C registration document under "Engine Capacity/Code". Not sure which engine your car has- Enter your registration above - we'll confirm your exact K9K fitment before any quotes are sent.
Easily Confused
F9Q (1.9 dCi)
The larger displacement diesel it partially replaced offered more low-end torque but was heavier and less fuel-efficient than the compact K9K architecture.
Alternative / Next-Gen Code
H5Ht (1.3 dCi)
The modern Renault-Nissan replacement featuring a timing chain and improved thermal efficiency, though it carries its own distinct oil consumption concerns compared to the K9K's belt-driven simplicity.
Related JLR Variants
R9M (1.6 dCi)
A larger, more robust diesel option for buyers who found the 1.5L K9K underpowered for towing or heavy loads, sharing similar service intervals but with a stronger bottom end.
Confirm the exact K9K fitment
The K9K sub-code is stamped directly onto the engine block, typically on a machined pad near the bellhousing or above the oil filter housing. It is also clearly listed on your vehicle's V5C registration document under "Engine Capacity/Code". Not sure which engine your car has- Enter your registration above - we'll confirm your exact K9K fitment before any quotes are sent.
Buying Guide
Buying a Replacement 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 K9K is only advisable for budget-conscious owners of low-value host vehicles, provided the unit comes with a verifiable service history and no history of DPF-related limp mode or injector failure. Given the commercial and urban nature of many host vehicles, mileage verification is critical to avoid inheriting a unit near the end of its service life. Explore used Nissan engines.
Reconditioned:
A proper reconditioned K9K is the most recommended path for most owners. A reputable rebuild will address the core weaknesses by fitting new or refurbished piezoelectric injectors, cleaning or replacing the DPF, and renewing all turbocharger seals and EGR components. This resolves the dominant failure patterns while keeping costs well below a full custom rebuild. Explore reconditioned Nissan engines.
Rebuilt:
A full rebuild is justified if the original K9K suffered catastrophic failure due to severe oil dilution from a leaking injector or a seized turbocharger sending metallic debris into the oil galleries. An upgraded rebuild should include new pistons, a machined block, and an updated oil pump to prevent future lubrication issues. Explore rebuilt Nissan engines.
Supply & Fit Line:
Our network of vetted UK specialists can supply the K9K unit and handle the complete installation, including ECU adaptation and DPF regeneration cycles, backed by a minimum 12-month warranty. Learn more about supply & fit.
Vehicle Value Note:
The K9K is typically found in Nissan Qashqai, Juke, and Note models valued between £1,000 and £10,000 depending on age, mileage, and specification. If your vehicle is at the lower end of this spectrum (e.g., an early 2006-2010 Nissan Note E11 valued under £2,000), a £1,500+ reconditioned engine replacement may exceed 75% of the car's current market value, triggering a 🔴 Scrap Threshold warning. In these specific scenarios, it is financially prudent to evaluate the vehicle's scrap or part-exchange value first. However, for well-maintained, higher-value Qashqai and Juke examples, investing in a properly reconditioned K9K remains a cost-effective alternative to vehicle replacement.
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Related Engines
Engines Related to the Nissan K9K
Explore engines that are closely related to the Nissan K9K, including its predecessor, successor, and key family variants.
Predecessor
F9Q (1.9 dCi)
The larger displacement diesel it partially replaced offered more low-end torque but was heavier and less fuel-efficient than the compact K9K architecture.
Successor
H5Ht (1.3 dCi)
The modern Renault-Nissan replacement featuring a timing chain and improved thermal efficiency, though it carries its own distinct oil consumption concerns compared to the K9K's belt-driven simplicity.
Sibling
R9M (1.6 dCi)
A larger, more robust diesel option for buyers who found the 1.5L K9K underpowered for towing or heavy loads, sharing similar service intervals but with a stronger bottom end.
Cross-Brand Twin
Renault K9K
The exact same physical engine, fitted to the Renault Clio, Megane, and Captur. Owners sourcing parts or replacements can safely cross-reference Renault K9K inventory for compatibility.
FAQ
Nissan K9KFrequently Asked Questions
Question 1How much does a Nissan K9K engine replacement cost in the UK-
A reconditioned Nissan K9K engine costs between £1,500 and £2,800 for supply only, or £1,890 to £3,385 fully fitted by an independent specialist. Used units start around £500 but carry high-mileage urban driving risks. Labour typically adds a £390-£585 premium to the supply cost.
- Used units start around £500 but carry high-mileage urban driving risks.
- Labour typically adds a £390-£585 premium to the supply cost.
Question 2What is the most common problem with the Nissan K9K 1.5 dCi-
The dominant failures are piezoelectric injector wear (often with swarf contamination) and turbocharger failure, typically emerging between 80,000 and 150,000 miles. Symptoms include rough idling, excessive black smoke, and limp mode from restricted exhaust flow or overfuelling. Ignoring injector leaks leads to oil dilution and catastrophic bearing failure.
- Symptoms include rough idling, excessive black smoke, and limp mode from restricted exhaust flow or overfuelling.
- Ignoring injector leaks leads to oil dilution and catastrophic bearing failure.
Question 3Which Nissan models use the K9K engine-
The K9K 1.5L dCi was fitted to the Nissan Qashqai (J10/J11), Juke (F15), and Note (E11/E12) from 2005 to 2018. It serves as the primary compact diesel workhorse across these models. Always verify your specific chassis via registration lookup before ordering.
- It serves as the primary compact diesel workhorse across these models.
- Always verify your specific chassis via registration lookup before ordering.
Question 4Should I buy a used or reconditioned K9K engine-
A reconditioned K9K is strongly recommended over a used unit due to the high risk of latent injector and DPF failures in high-mileage urban vehicles. A proper recon includes refurbished injectors, a cleaned or replaced DPF, and renewed turbo seals. A used unit may simply pass the same downtime risk to your car.
- A proper recon includes refurbished injectors, a cleaned or replaced DPF, and renewed turbo seals.
- A used unit may simply pass the same downtime risk to your car.
Question 5How do I know if my car has the K9K engine code-
The K9K code (and its specific sub-code, e.g., 832 or 844) is stamped on a machined pad on the engine block and is listed on your V5C document. It is frequently confused with the larger 1.6 dCi (R9M) or older 1.9 dCi (F9Q). Fitting the wrong revision causes ECU mapping conflicts and emissions system incompatibility.
- It is frequently confused with the larger 1.6 dCi (R9M) or older 1.9 dCi (F9Q).
- Fitting the wrong revision causes ECU mapping conflicts and emissions system incompatibility.
Compare Nissan K9K Engine Prices Today
Get a free, no-obligation price comparison tailored to your exact K9K sub-code and vehicle. Our registration lookup confirms your fitment before any quotes are sent, ensuring you receive accurate, compatible pricing for your Qashqai, Juke, or Note. With reconditioned Nissan K9K units starting from £1,500, comparing takes two minutes and could save your business or personal budget significant downtime and cost.
Vetted UK Specialists
Vetted UK specialists for K9K replacements
Minimum 12-Month Warranty
Minimum 12-month warranty on reconditioned and rebuilt options
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Nationwide delivery plus supply and fit availability
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