Hydraulic Clutch Master Cylinder for TOYOTA KIJANG Bus XUI3545A

CM246

Specific Vehicle Application:
The following is verified and accurate compatibility information:

Item	Information
Brand	TOYOTA
Model	KIJANG Bus (F5 series)
Sub-series	KF70 (1.8L gasoline)
Year Range	1991 – 2003
Engine	1.8L naturally aspirated gasoline engine
Internal Model	CM246
Transmission Type	Manual Transmission

OE Reference Numbers (11 in total):

Serial No.	OE Number
1	31410-12020
2	31410-12021
3	31410-12022
4	31410-27010
5	31410-27020
6	31410-27021
7	31410-27022
8	31420-27022
9	31410-27030
10	31410-27301
11	31410-30220

Product Specifications: The following parameters are measured data and are used for procurement verification, technical confirmation, and installation matching. Please verify the mounting dimensions and interface specifications before purchasing:

Specifications Item	Value / Description
Part No.	XUI3545A
Internal Model	CM246
Piston Diameter	15.87 mm
Mounting Size	Φ26.7 / 60 / 90° / 2-Φ8.9 (Two Φ8.9 through holes, bolted)
Connecting Size	M10 × 1.0
Compatible System	Hydraulic Clutch System
Product Certification	ISO 9001 / TS16949

If the master cylinder fails, the clutch pedal will lose its elasticity, becoming limp and lacking rebound when pressed. In severe cases, shifting gears becomes impossible, rendering the vehicle undrivable.
This is an aftermarket replacement part, 100% compatible with Toyota original specifications, covering multiple OE reference numbers, and suitable for Toyota Kijang (KF70 series) models from 1991–2003.

What kind of car is a Toyota Kijang?
The Toyota Kijang is a multi-purpose commercial vehicle (MPV/minivan) designed by Toyota specifically for the Southeast Asian market. It has been produced and sold in Indonesia for over 30 years and was once one of the best-selling models in the country. The KF70 series, equipped with a 1.8L gasoline engine, is one of the most widely used versions in the Kijang family.

Target Sales Markets (Sorted by Demand):
Indonesia – Home of Kijang, largest vehicle fleet, extremely strong demand in the used car repair market.
Southeast Asia – Large fleets in Malaysia, Thailand, Philippines, etc.
Middle East & Africa – High Toyota brand penetration in these regions, high demand for commercial vehicle repair parts.
Export Traders – Distributors specializing in Toyota parts for Japanese vehicles.

Core Function: The clutch master cylinder acts as a pump in the entire hydraulic clutch system. It is responsible for converting the mechanical action of the pedal into a hydraulic signal, precisely controlling the disengagement and engagement of the clutch.

Hydraulic Conversion: Efficiently converts the pedal force into hydraulic pressure, which is transmitted to the slave cylinder to complete the clutch action.
Sealing and Pressure Holding: Built-in high-precision seals ensure that the hydraulic system is leak-free and the pressure is stable, preventing the pedal from becoming soft and failing.
Precise Response: The piston diameter of 15.87mm is precision-machined, ensuring accurate hydraulic ratios and consistent, controllable pedal feel.
Quick Reset: The spring return design ensures that the pedal rebounds quickly after being released, without dragging, suitable for frequent gear shifting scenarios (especially important for commercial buses).
Durable Design: The seal material is high-temperature resistant and anti-aging, suitable for long-term use in tropical high-temperature environments (adaptable to Southeast Asian climates).

Installation Instructions (Technical Reference):
Mounting angle 90°, two Φ8.9 through holes (through-hole mounting, not threaded holes), bolted to a firewall.
Note: The mounting holes in the Mounting Size of this product are through holes (Φ8.9), unlike the M8 threaded hole design of the previous model. Please verify before installation.
Hydraulic pipe interface M10×1.0, when replacing, it is recommended to simultaneously check the hydraulic oil lines and gaskets.
It is recommended to replenish or replace the clutch fluid during replacement to ensure complete system bleed.

What problems can this product solve for overseas customers?
The Toyota Kijang KF70 is a classic model with a production cycle of over 30 years and a huge market presence in markets such as Indonesia. However, this has also brought the following industry pain points:
Increasingly scarce original parts: The Toyota Kijang KF70 has been discontinued for many years, and original parts (Toyota OE) are in short supply in some markets, even requiring cross-border sourcing, resulting in long waiting times and high costs.
11 OE numbers cause headaches for buyers: Different models and regional versions correspond to different part numbers, making it difficult for buyers to manage SKUs uniformly and easily leading to mismatches. This product covers all 11 OE specifications, simplifying the selection process.
Counterfeit parts lead to constant customer complaints: The Indonesian and Southeast Asian markets are flooded with counterfeit, inferior clutch pumps. These pumps are prone to aging and oil leaks, leading to increased after-sales complaints from distributors and damaging brand reputation.
Tropical environments accelerate aging: The high temperature and humidity of Southeast Asia place higher demands on seals. Ordinary replacement parts have short lifespans, resulting in frequent replacements by users. There is a clear market demand for durable products.
Lack of reliable long-term suppliers: Local buyers struggle to find Chinese factory partners who offer both quality assurance and a stable long-term supply.

How our product addresses these issues:
Strictly adheres to all 11 OE specifications. One SKU solves compatibility issues across multiple models, reducing the risk of incorrect selection.
ISO 9001/TS16949 certified. 100% airtightness testing before shipment eliminates the risk of oil leaks.
Seal materials are optimized for high-temperature environments and are suitable for the Southeast Asian climate.
Factory direct supply, supporting regular inventory for rapid replenishment.
OEM support available. OEM/ODM, helping buyers build local brands and enhance customer loyalty

Q: Why does this part have 11 OE numbers?
A: The Toyota Kijang KF70 series had a long production period (1991–2003). The part numbers may vary slightly depending on the model year and export destination (e.g., Indonesian domestic version vs. export version), but the actual part specifications are the same. This product is universally compatible, covering all 11 OE numbers, facilitating unified inventory management for buyers.

Q: Are the mounting holes threaded or through holes?
A: This product has two Φ8.9 through holes (perforated, not threaded), secured with matching bolts at a 90° angle. Please note this is different from other models using M8 threaded holes; please verify before installation.

Q: Will the seals age quickly in the high-temperature environment of Southeast Asia?
A: The seals in this product are made of high-temperature resistant materials, suitable for long-term use in tropical climates. Please contact technical support for specific material specifications and temperature resistance parameters.