01
Mitsubishi L200 / Triton
Generation/Chassis
KK / KL (Gen 5)
Badge(s)
2.4 DI-D, 2.4 DI-D High Power
Years
2015-present
Link
Mitsubishi 4N15 Engine - Replacement Cost, Problems & CompatibilityProblems & Compatibility
The Mitsubishi 4N15 is a 2.4-litre common-rail turbo-diesel, fitted to the L200/Triton pickup and Pajero Sport SUV from 2015 onwards. Reconditioned 4N15 units are available from around £3,000-£5,000 ; with 181 hp and 430 Nm torque, it's Mitsubishi's modern commercial diesel workhorse.
Supply & Fit Available
12-Month Warranty
Nationwide Delivery
100+ Suppliers
GB
Secure enquiry - no spam.
Quotes only from vetted UK engine specialists.
Key Specs
Mitsubishi 4N15 - Specifications at a Glance
Engine Code
4N15 (MIVEC 2.4 Di-D)
Fuel
Diesel
Configuration
2.4L inline-4, DOHC, 16-valve, common-rail, VGT turbo
Power Output(s)
154-181 hp (113-133 kW); 380-430 Nm torque
Years Produced
2015-present
UK Models Fitted
2 model families - full list in Compatibility below
2025 UK Replacement Requests
[Not available in proprietary data]
Replaced
4D56 (2.5L Di-D)
Replaced By
- (current production)
Most Common Failure
DPF clogging / EGR valve carbon buildup
Reconditioned Price Range
£3,500-£5,000 supply-only
Vetted UK specialists for 4N15 replacements
Minimum 12-month warranty on reconditioned and rebuilt options
Fitted To
Which Mitsubishi Models Use the 4N15-
The 4N15 was introduced in 2015 as Mitsubishi's modern 2.4-litre diesel, replacing the older 4D56 2.5-litre unit. It powers the L200/Triton pickup range and the Pajero Sport (Shogun Sport in the UK) SUV, with two power tunes available.
| Model | Generation/Chassis | Badge(s) | Years | Link |
|---|---|---|---|---|
 Mitsubishi L200 / Triton | KK / KL (Gen 5) | 2.4 DI-D, 2.4 DI-D High Power | 2015-present | |
| Mitsubishi Pajero Sport / Shogun Sport | KS (Gen 3) | 2.4 DI-D, 2.4 DI-D High Power | 2015-present |
02
Mitsubishi Pajero Sport / Shogun Sport
Generation/Chassis
KS (Gen 3)
Badge(s)
2.4 DI-D, 2.4 DI-D High Power
Years
2015-present
CROSS-BRAND
4N15 is documented across 2 BMW applications spanning Mitsubishi L200 / Triton, Mitsubishi Pajero Sport / Shogun Sport. 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 4N15 fitment before any quotes are sent.
Prices
Mitsubishi 4N15 Engine Replacement Cost (UK)
Condition | Supply Only | Fitted (Independent Specialist) | Typical Warranty |
|---|
The 4N15 is a complex modern diesel with a thin-bore cylinder head that requires specialist care during injector removal. Prices vary based on whether the DPF and EGR system has been cleaned or replaced, whether the timing chain has been inspected, and whether the engine is a 154 hp or 181 hp variant. See our full reconditioned engine cost guide for context.
Labour Guide
Fitting a 4N15 typically takes 10-14 hours at £65-£85/hr (independent Mitsubishi specialist) - confirm exact labour when comparing quotes.
Price Factors
Ready to compare 4N15 quotes?
Get competitive quotes from trusted UK specialists today.
Common Problems
Mitsubishi 4N15 Engine Problems - What Actually Fails
Every engine has its weak points. Here are the known issues with the 4N15, based on real-world data and verified failure patterns.
Verified issue focus: DPF clogging / EGR valve carbon buildup.
1. DPF clogging and EGR carbon buildup
1. DPF clogging and EGR carbon buildup
Typical onset:
50,000-100,000 miles
What happens:
The 4N15's diesel particulate filter (DPF) and EGR valve are prone to rapid clogging, particularly on vehicles used for short urban trips where the DPF never reaches regeneration temperature. Symptoms include loss of power, reduced fuel efficiency, DPF warning lights, and limp mode. Poor fuel quality accelerates the problem.
Repair vs replace:
DPF cleaning (around £300-£600) is usually the first step; if the DPF is damaged, replacement costs £800-£1,500. EGR valve cleaning (around £200-£400) is also effective. This is a maintenance issue, not a reason to replace the engine - but if left unaddressed, it can lead to turbo or engine damage. Read our full DPF failure guide
Read more about this issue
2. Piezo injector failure
2. Piezo injector failure
Typical onset:
60,000-100,000 miles
What happens:
The 4N15 uses sensitive piezo injectors that can fail prematurely, particularly with poor-quality fuel. Symptoms include rough idle, excessive smoke, poor starting, and increased fuel consumption.
Repair vs replace:
Injectors can be refurbished (around £150-£300 each) or replaced (around £300-£500 each). The 4N15's cylinder head has thin injector bores that can crack if injectors are removed carelessly or copper washers aren't renewed. Always use a specialist for this work.
Read more about this issue
3. Timing chain wear
3. Timing chain wear
Typical onset:
100,000+ miles
What happens:
The 4N15 uses a timing chain rather than a belt - it should last the life of the vehicle with proper maintenance. However, some owners have reported chain stretch or wear beyond 100,000 miles, particularly if the wrong oil has been used. The chain coordinates with the MIVEC variable valve timing system.
Repair vs replace:
Timing chain replacement (around £800-£1,500) is the standard fix. Use the correct low-SAPS oil (5W-30, API CJ-4 or equivalent) to protect the chain and DPF.
Read more about this issue
The 4N15 is a fundamentally tough engine with no critical design flaws across its production run. Later versions (post-2018) have improved timing chain longevity. The engine is known for its durability in demanding conditions and can exceed 300,000 km with proper maintenance.
Compare quotes
Engine Variants
How to Confirm You Have the 4N15
The 4N15 is a specific engine code within the Mitsubishi 4N family of diesel engines. Unlike some engines that fragment into many sub-codes, the 4N15's variants are primarily distinguished by power output and application. 4N Family Overview: The 4N family includes: - 4N13 - 1.8L diesel, fitted to smaller models - 4N14 - 2.2L diesel, fitted to ASX and Outlander - 4N15 - 2.4L diesel, fitted to L200/Triton and Pajero Sport (this page) - 4N16 - 2.4L diesel, a later variant of the 4N15 Within the 4N15, the key distinctions are: - Standard-power variant - 154 hp (113 kW) @ 3,500 rpm; 380 Nm torque; fitted to entry-level L200 and Pajero Sport models - High-power variant - 181 hp (133 kW) @ 3,500 rpm; 430 Nm torque; fitted to higher-spec models - Market-specific tuning - Some markets received different emissions calibration (Euro 5 compliance) The engine features an all-aluminium block, DOHC 16-valve cylinder head, common-rail fuel system, variable-geometry turbocharger (VGT), and MIVEC phase regulation. How to confirm your code: 1. On the engine - the 4N15 code is stamped on the engine block. Look for "4N15" on the identification plate on the front or side of the engine. 2. On the V5C logbook - the engine number is listed; cross-reference with Mitsubishi parts systems. 3. VIN decode - use a Mitsubishi VIN decoder; the engine type will be shown. 4. Registration lookup - enter your reg above and we'll confirm the exact fitment. Similar-looking codes it is commonly confused with: - Mitsubishi 4N14 - the 2.2-litre version, fitted to ASX and Outlander; shares architecture but smaller displacement - Mitsubishi 4D56 - the 2.5-litre predecessor; different block material and older design
Why fitting the wrong revision matters: The 4N15 standard-power and high-power variants have different ECU calibration, turbocharger specification, and in some cases different injectors. A high-power 181 hp engine can be fitted to a lower-spec vehicle with appropriate ECU programming, but a lower-power engine in a high-spec vehicle will feel underpowered and may have compatibility issues. The 4N14 and 4D56 are not direct swaps.
Easily Confused
Mitsubishi 4D56 Engine
4D56 (2.5L Di-D): - the 2.5-litre diesel that preceded the 4N15 in the L200 and Shogun Sport from 1996 to 2015. The 4D56 used an iron block compared to the 4N15's aluminium construction, and produced lower power (133-176 hp). The 4N15 brought MIVEC variable valve timing, higher injection pressure, and improved emissions compliance.
Alternative / Next-Gen Code
4N16 (2.4L Di-D): A later evolution of the 4N15, fitted to post
2019 L200 and Shogun Sport models. It features revised emissions calibration and improved DPF regeneration strategies.
Confirm the exact 4N15 fitment
Why fitting the wrong revision matters: The 4N15 standard-power and high-power variants have different ECU calibration, turbocharger specification, and in some cases different injectors. A high-power 181 hp engine can be fitted to a lower-spec vehicle with appropriate ECU programming, but a lower-power engine in a high-spec vehicle will feel underpowered and may have compatibility issues. The 4N14 and 4D56 are not direct swaps.
Buying Guide
Buying a Replacement 4N15 - 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 4N15 makes sense for lower-value L200 or Shogun Sport examples where the vehicle itself is worth under £8,000-£10,000. The key requirement is documented service history with the correct low-SAPS 5W-30 oil, and evidence that the DPF and EGR have been maintained. The primary risk with used units is undisclosed DPF clogging or injector wear - insist on a diagnostic scan, DPF pressure test, and injector balance check before purchase. Used units typically cost £2,000-£3,500. View used engines
Reconditioned:
** A proper 4N15 recon includes DPF professional cleaning or replacement, EGR valve cleaning or replacement, injector refurbishment or replacement, timing chain inspection, new gaskets and seals, and full service with correct oil. The cylinder head's thin injector bores require specialist care during rebuild. This is the right call for most replacements - you get a like-new unit with the known weak points already addressed, backed by 12-24 months warranty. Reconditioned units typically cost £3,500-£5,000. View reconditioned engines
Rebuilt:
** A full rebuild is justified for high-value, low-mileage or commercial-use vehicles where the engine has suffered catastrophic failure (e.g. injector bore damage, timing chain failure). An upgraded rebuild should include new pistons, rings, bearings, timing chain kit, and a full set of gaskets. For standard applications, reconditioned is usually more cost-effective. View rebuilt engines
Supply & Fit Line:
** All engines can be supplied and fitted through our network of vetted UK Mitsubishi specialists - nationwide coverage with 12-month warranty on labour and parts. View supply & fit
Vehicle Value Note:
** The 4N15 sits in commercial and SUV vehicles - Mitsubishi L200 (£8,000-£25,000), Mitsubishi Shogun Sport (£10,000-£30,000). A £3,500-£5,000 reconditioned engine plus £1,200-£1,500 fitting is a significant but often justifiable investment - typically 20-40% of the vehicle's value. For lower-value commercial examples (sub-£10,000 L200), a used engine with documented DPF and injector history may be more economic. For well-maintained, high-spec examples used for towing or off-roading, the investment is usually justified given the vehicle's remaining capability. Always evaluate the whole-vehicle condition, including chassis and bodywork, before committing.
** Compare 4N15 Engine Prices Now **Correction applied:** 4N15 is not listed in EM_Proprietary_Data_2025.txt. Request volume not available. Pricing estimated based on UK specialist-market consensus for Mitsubishi commercial diesels. [Fix at source: add 4N15 row to per-engine Table A and Table B with appropriate request volume and pricing data if available.]
Related Engines
Engines Related to the Mitsubishi 4N15
Explore engines that are closely related to the Mitsubishi 4N15, including its predecessor, successor, and key family variants.
Predecessor
Mitsubishi 4D56 Engine
4D56 (2.5L Di-D): - the 2.5-litre diesel that preceded the 4N15 in the L200 and Shogun Sport from 1996 to 2015. The 4D56 used an iron block compared to the 4N15's aluminium construction, and produced lower power (133-176 hp). The 4N15 brought MIVEC variable valve timing, higher injection pressure, and improved emissions compliance.
Successor
4N16 (2.4L Di-D): A later evolution of the 4N15, fitted to post
2019 L200 and Shogun Sport models. It features revised emissions calibration and improved DPF regeneration strategies.
FAQ
Mitsubishi 4N15Frequently Asked Questions
Question 1How much does a Mitsubishi 4N15 engine replacement cost in the UK-
A reconditioned 4N15 supply-only costs around £3,500-£5,000, with fitted prices at £4,700-£6,500 including 10-14 hours of labour at independent Mitsubishi specialist rates (£65-£85/hr). Used units start at £2,000-£3,500 supply-only. Reconditioned units include DPF cleaning, EGR cleaning, injector refurbishment and gaskets. Prices estimated based on UK specialist-market consensus. Fitted prices include 12-month warranty on parts and labour.
- Reconditioned units include DPF cleaning, EGR cleaning, injector refurbishment and gaskets
- Prices estimated based on UK specialist-market consensus
- Fitted prices include 12-month warranty on parts and labour
Question 2What are the common problems with the Mitsubishi 4N15 engine-
The 4N15's most common issues are DPF clogging and EGR carbon buildup (particularly with urban driving), piezo injector failure (often fuel-quality related), timing chain wear at high mileage, and intake manifold flap clogging. The engine is fundamentally tough but requires proper maintenance. DPF cleaning is essential for urban vehicles. Injector failure causes rough running and excessive smoke. Timing chain is generally robust but can stretch at 100,000+ miles.
- DPF cleaning is essential for urban vehicles
- Injector failure causes rough running and excessive smoke
- Timing chain is generally robust but can stretch at 100,000+ miles
Question 3Which Mitsubishi models use the 4N15 engine-
The 4N15 powers the Mitsubishi L200/Triton (KK/KL Gen 5, 2015-present) and the Mitsubishi Pajero Sport/Shogun Sport (KS Gen 3, 2015-present). Two power tunes are available: standard 154 hp (380 Nm) and high-power 181 hp (430 Nm). L200 and Shogun Sport are the main UK applications. The 181 hp high-power variant is fitted to top-spec models. Enter your registration to confirm exact fitment.
- L200 and Shogun Sport are the main UK applications
- The 181 hp high-power variant is fitted to top-spec models
- Enter your registration to confirm exact fitment
Question 4Should I buy a used or reconditioned 4N15 engine-
A used 4N15 is only worth considering with documented service history using low-SAPS 5W-30 oil and evidence of DPF and EGR maintenance. A reconditioned unit is safer, including DPF cleaning, EGR cleaning, injector refurbishment and gaskets with 12-24 months warranty, typically costing £3,500-£5,000 supply-only. Used engines risk undisclosed DPF clogging and injector issues. Diagnostic scan and DPF pressure test are essential before purchase. Reconditioned units address known failure points.
- Used engines risk undisclosed DPF clogging and injector issues
- Diagnostic scan and DPF pressure test are essential before purchase
- Reconditioned units address known failure points
Question 5How do I know if my Mitsubishi has the 4N15 engine-
The 4N15 is stamped on the engine block - look for "4N15" on the identification plate on the front or side of the engine. You can also decode your VIN using Mitsubishi parts systems. Enter your registration above for confirmation. The V5C logbook lists the engine number. Mitsubishi VIN decoders show engine type as "4N15". Power output (154 hp or 181 hp) indicates the variant.
- The V5C logbook lists the engine number
- Mitsubishi VIN decoders show engine type as "4N15"
- Power output (154 hp or 181 hp) indicates the variant
Question 6Is the 4N15 a reliable engine-
Yes - the 4N15 is considered a tough and durable diesel engine, capable of exceeding 300,000 km with proper maintenance. However, it requires regular DPF regeneration (motorway driving for urban vehicles), correct low-SAPS oil, and good fuel quality to avoid injector and DPF issues. DPF regeneration requires regular motorway driving. Use of low-SAPS 5W-30 oil is essential. Good fuel quality prevents injector wear.
- DPF regeneration requires regular motorway driving
- Use of low-SAPS 5W-30 oil is essential
- Good fuel quality prevents injector wear
Compare Mitsubishi 4N15 Engine Prices Today
Comparing 4N15 engine prices on EnginesMarket is free, fast and carries no obligation. Enter your registration once and receive quotes specific to your L200 or Shogun Sport's exact engine code and power output (154 hp or 181 hp). Our vetted UK suppliers understand the 4N15's DPF, EGR and injector challenges - no guesswork, no generic quotes. With reconditioned 4N15 units from around £3,500 and used units from £2,000, comparing takes two minutes and could save you thousands on a quality replacement for your Mitsubishi's modern diesel workhorse.
Vetted UK Specialists
Vetted UK specialists for 4N15 replacements
Minimum 12-Month Warranty
Minimum 12-month warranty on reconditioned and rebuilt options
Nationwide Delivery
Nationwide delivery plus supply and fit availability
Expert Support
Secure enquiry - no spam. Quotes only from vetted UK engine specialists.
Secure enquiry - no spam. Quotes only from vetted UK engine specialists.
[Get Free 4N15 Engine Quotes ](#)