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2.4L SOHC 16-Valve Engine Complete Assembly for 2017-2020 Mitsubishi - Front

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Pay-by-bank price
$ 506
or $522 paying by card
🏦 3% bank discount on your entire order — arranged at checkout

Product Notes Read before buying

Odometer 97,100 miles 🛡 120-day warranty included
fwd donor
This is a used part. It is for vehicles with the 2.4L 4-cylinder engine (engine code 4J12-0-23L) and front-wheel drive (FWD). This engine features a single overhead cam (SOHC) and 16 valves, producing 166 horsepower and 162 lb-ft of torque. Built for vehicles where the 8th digit of the VIN is 3.
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Not sure? Ask WrenchyYour Parts Assistant.

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Vehicle Fitment Guide

This part fits the following vehicles:

Mitsubishi 1 model(tapclick to expand)(tapclick to hide)
Outlander 2017-2020 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL
Body Style Years Engine Attributes
ES SUV 2017 - 2020 L4 2.4L AWD/FWD | Automatic CVT
Limited SUV 2017 - 2020 L4 2.4L FWD | Automatic CVT
SE SUV 2017 - 2020 L4 2.4L AWD/FWD | Automatic CVT
SE Plus SUV 2017 - 2020 L4 2.4L FWD | Automatic CVT
SEL SUV 2017 - 2020 L4 2.4L AWD/FWD | Automatic CVT
LE SUV 2018 - 2020 L4 2.4L AWD/FWD | Automatic CVT
SE SUV 2018 L4 2.4L AWD | Automatic
EX SUV 2020 L4 2.4L AWD | Automatic CVT
EX-L SUV 2020 L4 2.4L AWD | Automatic CVT
Limited Edition SUV 2020 L4 2.4L AWD | Automatic CVT
SP SUV 2020 L4 2.4L AWD/FWD | Automatic CVT
2019
Applies to every configuration above: Hollander: OUTLANDER 17-20 2.4L (VIN 3, 8th digit); engine_size: include 2.4L; engine_code: include VIN 3 (8th digit); fuel_type: include GAS [inferred]
Verify before ordering — please confirm your vehicle's year, make, model and sub-model specifications before placing your order. If anything is unclear, our customer service team is available to help.

Know This Engine Before You Buy

The research behind our purchase interview — recalls, bulletins and real install economics for this engine family:

A quick look at your own vehicle makes sure the right engine shows up:

  • Verify the 8th digit of the VIN is '3'.
  • Confirm the vehicle is a standard gasoline model and not a PHEV.
  • Determine if the vehicle is FWD or AWD.
🔎 Where to look: Locate the flat machined surface on the front side of the engine block near the starter/bell housing to find the stamped engine code (4J12 or 4B12).

What the install really takes — plan and budget with confidence:

10 to 14 hoursshop labor1200 to 2500typical shop bill, on top of the partExpertDIY difficulty

Special tools this job needs:

  • Engine hanger plate/support fixture (MB992853 or MZ203827)
  • Magnetic base plate (MB992854)
  • Bi-directional OBD-II scan tool (MUT-III)
  • Drive plate holder (MB991883)
🔌 Wiring harness: The wiring harness is plug-and-play, but transferring your original harness is recommended to ensure full compatibility.

Budget for these consumables at install:

  • Engine Oil (0W-20 or 5W-30 API SN/SP full synthetic, approx 4.8-4.9 quarts)
  • Oil Filter (Genuine Mitsubishi MZ690111 or WIX 57356)
  • Coolant (Mitsubishi Super Long Life Coolant blue or P-OAT equivalent)
  • Spark Plugs (Denso IXUH20I or VXUH20I)
  • Gaskets (Intake manifold, exhaust manifold, thermostat housing, valve cover, throttle body)
  • Crankshaft seals (Front and rear recommended)
  • CVT Fluid (Genuine Mitsubishi DiaQueen CVTF-J4 for top-off)

What your vehicle’s computers will need after the swap:

⚠️ Model-dependentprogramming / calibration⚠️ Yesdealer tool needed✅ NoECU/PCM re-marriage

What’s involved: Crankshaft Position (CKP) Sensor Relearn, ECU/TCM adaptive learning reset, and idle relearn.

Programming requirements vary by build: some installations require a Crankshaft Position (CKP) Sensor Relearn and CVT adaptive reset using a bi-directional scan tool, while others require no programming if the original ECU is reused — confirm with us before install.

Pro tips for a smooth first start-up — hand them to whoever does the install:

  • Front bumper and grille removal is required to gain adequate clearance during swap.
  • Inspect the VVL rocker assembly pins under the valve cover before installing to ensure they are not backing out.
  • Transfer the oil pan, accessory brackets, and intermediate shaft bracket if swapping between AWD and FWD configurations.
  • Ensure the torque converter is fully and properly seated in the transmission pump before tightening bell housing bolts to avoid destroying the pump.
  • Transfer original CKP sensor if the donor sensor is incompatible or fails to register.
  • Manually adjust valve clearances as this engine uses solid tappets without hydraulic lifters.

Easy to get right once you know them:

  • Ordering this standard engine for an Outlander PHEV (Plug-in Hybrid) model.
  • Using non-spec engine oil which clogs the sensitive MIVEC solenoid screen.
  • Using generic CVT fluid instead of genuine Mitsubishi DiaQueen CVTF-J4.
  • Failing to perform the CKP relearn or idle relearn after installation.
  • Forcing the engine and transmission together using bellhousing bolts when misaligned.
  • Reusing old compressed gaskets and seals instead of replacing them.

Not issues with the units on this page — the manufacturer documented these for every engine of this family, wherever you buy one. Handy for your installer:

severeVariable Valve Lift (VVL) Rocker Pin Failure4J11 and 4J12 engines

🔎 Recommended at install: Inspect the VVL rocker assembly pins before installation to ensure they are fully seated.

moderateDefective Relays May Cause Engine Stall2015-2017 Outlander

🔎 Recommended at install: Replace defective power relays (NHTSA ID: 17V-609, OEM: SR-17-005).

moderateCVT Transmission Shudder/Surge2016-2020 Outlander with 2.4L and CVT-8

🔎 Recommended at install: Address hydraulic pressure circuit issues in the transmission (TSB-20-23-001REV).

moderateMIVEC Solenoid Malfunction4J12 engines

🔎 Recommended at install: Install updated solenoid assembly Part No. MD392015 (TSB-ENG-13-009).

minorFalse System Too Lean or O2 Sensor DTCs2014-2016 Outlander

🔎 Recommended at install: Dealer ECM software update (TSB-16-13-002).

moderateTiming Chain StretchHigh-mileage units (typically over 90,000 miles)

🔎 Recommended at install: Inspect chain and tensioners; replace if stretched.

Researched from factory recalls, TSBs and OEM service data (reference unit 300-10746-4573097). Unit-specific details — mileage, condition, warranty, freight — are covered in the checkout interview.

Policies, in plain English.

Shipping & Handling

  • Ships by LTL freight on a pallet — a real freight truck, not a parcel van
  • Your checkout freight quote covers delivery to your door (liftgate service included for residential addresses)
  • The carrier calls ahead to schedule a delivery window — someone must be present to receive it
  • Typically palletized and picked up within 2–3 business days; transit time depends on distance

120-Day Warranty

This part includes a 120-day warranty.

  • If the part fails within the warranty window, we'll replace it or refund per the coverage terms
  • Coverage is parts-only — installation labor is not included
  • Warranty covers defects — not installation errors, misuse, or damage after installation

Your pre-purchase interview reviews these exact terms with you before anything is charged.

Returns (30 Days)

We accept returns of uninstalled parts within 30 days of delivery for this part.

  • Defective parts: We will replace the part or issue a refund at our discretion
  • Programming: "Needs to be programmed to my vehicle" is not a valid return reason. Many modules require dealer programming — we're happy to help connect you with resources if your dealer says it's not programmable
  • Return shipping: This part ships by freight (LTL) — the part price is refundable per the terms above, but shipping costs are non-refundable and return freight follows the seller's return terms. Your pre-purchase interview walks through the exact numbers before you buy
  • Parts must be returned in original packaging and unmodified condition
  • Poorly packaged returns that arrive damaged will not be credited

Damaged in Shipping?

Freight damage is rare — and you're fully protected when you do two things at delivery:

  • Inspect before you sign — you're allowed time to look the pallet over while the driver waits
  • Write any damage on the delivery receipt before signing — that one line is what makes a freight claim succeed
  • Severe damage? Refuse the delivery — it goes back at no cost to you and we make it right
  • Photograph the pallet before unwrapping; report concealed damage within 24 hours of delivery

We handle the carrier claim — you just help document it. Your pre-purchase interview walks through this checklist too.

Order Cancellation

Cancel before shipment for a full refund. Once the pallet has been built, a preparation charge may apply — and once the freight carrier picks it up, shipping costs are non-refundable and standard return terms apply. Your pre-purchase interview shows the exact numbers before you pay.

Expert Guides

2017-2020 Mitsubishi Outlander 2.4L 4J12/4B12: Problems, Identification, and Used Replacement

Identify the 2.4L MIVEC engine, learn what causes VVL or relay failures, and discover when swapping in a used OEM unit is the smartest fix.

Read Full Guide →

Miscellaneous Information

OEM Part Numbers:
Mitsubishi: 1000D144, MU1000D144

Fits Years: 2017 2018 2019 2020

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120DAY
Yard Warranty

Backed By The Selling Yard

This unit ships with the selling yard's 120-day warranty. Longer plans can be requested during checkout.

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