Description

Mitsubishi OEM Cylinder Block Chain Oil Jet for Evo X (MN187231)

Firstly, Buy Mitsubishi OEM Cylinder Block Chain Oil Jet Evo X MN187231. If you are rebuilding, refreshing, or servicing the 4B11 engine in your Mitsubishi Lancer Evolution X, the Mitsubishi OEM Cylinder Block Chain Oil Jet Evo X is an important genuine factory component to consider. Mitsubishi part number MN187231 is the OEM cylinder block chain lubricant oil jet used in the Evolution X engine. It is designed for the correct factory location within the cylinder block and is listed under diagram reference 01343. Genuine replacement components such as this help maintain the correct engine configuration during an OEM rebuild or restoration.

The MN187231 oil jet is specifically listed for the 2008–2015 Mitsubishi Lancer Evolution X (CZ4A) with the 4B11 engine. STM Tuned identifies it as a genuine OEM Mitsubishi factory replacement and states that one oil jet is included with the purchase.

Genuine Mitsubishi OEM Cylinder Block Chain Oil Jet Evo X

The engine lubrication system contains several specialized oil-control components, and the cylinder block chain oil jet is one of the parts Mitsubishi engineered specifically for the 4B11 engine assembly. The OEM catalog identifies MN187231 as “OIL JET, CYLINDER BLOCK CHAIN LUBRICANT,” confirming its intended function and location in the engine assembly.

For an Evo X engine rebuild, using the correct factory part number is especially useful when replacing missing, damaged, contaminated, or previously removed components. Instead of adapting a generic oil jet, MN187231 provides a direct OEM replacement for the application listed by Mitsubishi.

This makes it suitable for engine builders, Evo X restoration projects, machine shops, and enthusiasts completing a 4B11 cylinder block rebuild.

Why Use the OEM MN187231 Oil Jet?

Firstly, the Mitsubishi OEM Cylinder Block Chain Oil Jet Evo X is manufactured as a factory-specification component for the Mitsubishi application. This is important when restoring an engine to its original configuration or assembling a cylinder block using OEM specifications.

Secondly, the correct oil jet helps preserve the intended lubrication arrangement of the engine. The 4B11 cylinder block uses several different lubrication-related components, including oil jet check valves and oil jet squirters, so selecting the correct part number is essential rather than assuming that all engine oil jets are interchangeable. Mitsubishi parts catalogs separately identify MN187231 as the chain lubricant oil jet and 1228A012 as the cylinder block oil jet/squirter.

Thirdly, genuine OEM hardware is particularly valuable during a complete engine rebuild. Small lubrication components can be easy to overlook when an engine is disassembled, yet they remain part of the original engine assembly and should be checked during rebuilding.

Evo X 4B11 Engine Application

MN187231 is listed for the Mitsubishi Lancer Evolution X CZ4A. STM Tuned specifically lists the application as 2008–2015 Evolution X, while Mitsubishi parts catalog information also identifies MN187231 as the cylinder block chain lubricant oil jet under diagram code 01343.

This makes the part particularly relevant for:

• 2008 Mitsubishi Lancer Evolution X
• 2009 Mitsubishi Lancer Evolution X
• 2010 Mitsubishi Lancer Evolution X
• 2011 Mitsubishi Lancer Evolution X
• 2012 Mitsubishi Lancer Evolution X
• 2013 Mitsubishi Lancer Evolution X
• 2014 Mitsubishi Lancer Evolution X
• 2015 Mitsubishi Lancer Evolution X
• CZ4A chassis
• Mitsubishi 4B11T engine
• OEM 4B11 cylinder block rebuilds
• Evo X engine restoration projects

Always verify fitment using your VIN and the original engine configuration before ordering, particularly for imported vehicles or engines that have been replaced or modified. STM Tuned also recommends VIN verification when confirming the correct part number.

OEM Replacement for Engine Rebuilds

When rebuilding a 4B11 engine, it is common to concentrate on major components such as pistons, rings, bearings, gaskets, timing components, and the cylinder head. However, smaller factory components also deserve attention.

The MN187231 oil jet can be useful when:

• Replacing a missing factory component
• Reassembling a disassembled 4B11 cylinder block
• Restoring an Evo X engine to OEM specification
• Building an OEM-style replacement engine
• Refreshing an existing cylinder block
• Replacing damaged or questionable original hardware
• Completing an engine machine-shop rebuild
• Maintaining correct factory lubrication components

Because Mitsubishi lists MN187231 separately from other 4B11 oil-control components, ordering by the exact OEM part number helps reduce the possibility of receiving the wrong component.

Mitsubishi OEM Cylinder Block Chain Oil Jet Specifications

Product: Mitsubishi OEM Cylinder Block Chain Oil Jet
Part Number: MN187231
Diagram Reference: 01343
Brand: Mitsubishi
Component Type: Cylinder Block Chain Lubricant Oil Jet
Engine: Mitsubishi 4B11 / 4B11T
Vehicle: Mitsubishi Lancer Evolution X
Chassis: CZ4A
Model Years: 2008–2015
Condition: Genuine OEM replacement
Quantity: 1 oil jet
Related Mounting Bolt: MF140203

STM Tuned lists the mounting bolt separately as MF140203, so the bolt should be purchased separately if your original hardware is missing or requires replacement.

Factory-Style Fit and Installation

The MN187231 is intended for the designated cylinder block location shown in the Mitsubishi parts diagram. Since the oil jet is a precision engine component, installation should be performed during engine assembly according to the appropriate Mitsubishi service information and torque specifications.

Before installation, inspect the cylinder block area and confirm that the oil passage and mounting location are clean and free from debris. Engine lubrication passages should always be protected from contamination during an engine rebuild.

If you are replacing an existing oil jet, compare the old component with the new part and confirm the OEM number. For engines that have undergone previous modifications or component swaps, VIN and engine identification should be checked before ordering.

Buy Mitsubishi OEM MN187231 Online

If you are searching for a Mitsubishi OEM Cylinder Block Chain Oil Jet Evo X, MN187231 provides a straightforward way to source the correct factory component by its original Mitsubishi part number.

It is a small component, but it belongs to the 4B11 cylinder block lubrication system and is worth replacing when rebuilding an engine where the original part is missing, damaged, or questionable. Genuine OEM parts are also useful for enthusiasts who want to maintain factory-style specifications rather than mixing different aftermarket components throughout an engine rebuild.

For Evo X owners and engine builders, ordering by the exact MN187231 part number also makes it easier to identify the correct component among the multiple oil jets and lubrication parts used throughout the 4B11 engine.

Frequently Asked Questions

What is Mitsubishi part number MN187231?

MN187231 is a genuine Mitsubishi cylinder block chain lubricant oil jet. Mitsubishi catalog information identifies it under diagram reference 01343.

What vehicles use MN187231?

STM Tuned lists MN187231 for the 2008–2015 Mitsubishi Lancer Evolution X (CZ4A).

Is MN187231 a genuine Mitsubishi OEM part?

Yes. It is listed as a genuine Mitsubishi OEM component by Mitsubishi parts catalogs and OEM Mitsubishi parts suppliers.

How many oil jets are included?

The product is sold individually, with one MN187231 oil jet included.

Is the mounting bolt included?

The mounting bolt is listed separately. STM Tuned identifies MF140203 as the available mounting bolt for this oil jet.

Is this the same as the Evo X oil jet squirter?

No. Mitsubishi catalogs separately identify MN187231 as the cylinder block chain lubricant oil jet, while 1228A012 is listed separately as an oil jet/squirter.

Should I verify the part number before ordering?

Yes. VIN verification is recommended, especially if your Evo X has a replacement engine, imported components, or previous modifications.

Whether you are completing a full 4B11 rebuild or replacing a single missing lubrication component, you can buy the Mitsubishi OEM Cylinder Block Chain Oil Jet Evo X (MN187231) from evomotorparts.com and order the correct genuine OEM part for your Evo X engine project.