Seiken Hydraulic Brake Amp- Clutch Parts Catalogue May 2026

The Seiken Hydraulic Brake & Clutch Parts Catalogue is a comprehensive technical resource used to identify precision-engineered Japanese replacement parts for vehicle hydraulic systems. Catalogues, such as the widely referenced Scribd version up to 2016, often span over 1,300 pages and cover a vast range of Asian and international vehicle models. How to Use the Catalogue

To find the correct part, look for these key data points in the tables:

Manufacturer Section: Parts are typically grouped by vehicle make (e.g., Toyota, Nissan, Isuzu, Honda).

Model/Type & Year: Search for your specific vehicle model and its production year (e.g., "Corolla KE1# -70").

OEM vs. Seiken Part Number: Tables cross-reference the Original Equipment Manufacturer (OEM) number with Seiken's specific part codes, such as SK or KOS numbers.

Specifications: Look for dimensions like bore size (e.g., 5/8" or 15.87mm) to verify fitment.

Abbreviations Guide: Use the Abbreviations & Symbols page to decode terms like S.R.S. (Air Bag), SOHC, or W/B (Wheelbase). Core Product Categories seiken hydraulic brake amp- clutch parts catalogue

The catalogue is divided into several hydraulic component types: Brake Components:

Master Cylinders & Repair Kits: Devices that transform pedal power into hydraulic pressure.

Wheel Cylinders & Cup Kits: Actuators for brake shoes, often categorized into front and rear.

Caliper Seal Kits: Essential for maintenance of disc brake calipers. Clutch Components:

Clutch Master Cylinders: Converts clutch pedal force into liquid pressure.

Clutch Operating/Slave Cylinders: Receives pressure to actuate the clutch mechanism. The Seiken Hydraulic Brake & Clutch Parts Catalogue

Clutch Boosters: Reduces the required pedal effort through compression pressure. Accessories & Chemicals:

Brake Hoses & Seals: Critical for maintaining system pressure without leaks.

Specialized Fluids: Seiken manufactures its own DOT3 and DOT4 brake fluids, lubricants, and coolants to ensure compatibility with their rubber seals. Maintenance & Safety

When using parts found in the catalogue, ensure you follow proper installation procedures such as: Electric Reach Truck Catalog | PDF - Scribd

This guide provides a structured overview of the Seiken Hydraulic Brake and Clutch Parts Catalogue.

Since Seiken (Manufactured by Seiken Kagaku Kenkyusho Co., Ltd.) produces a massive range of components—primarily for Japanese Domestic Market (JDM) vehicles like Toyota, Nissan, Honda, and Mitsubishi—this guide is designed to help you navigate their catalog, understand their product codes, and identify the correct parts. Master Cylinders: Often start with codes like M

3. Understanding Seiken Part Numbers

Seiken uses a specific coding system. While formats can vary slightly, the standard structure is usually a combination of numbers and letters.

Typical Format: [Series Code] - [Size/Spec]

  • Master Cylinders: Often start with codes like M or a specific diameter number.
    • Example: A part number might look like 13/14M (indicating a Master cylinder with 13/14mm piston diameter).
  • Wheel Cylinders: Often start with W.
    • Example: W19 (indicating a Wheel cylinder with 19mm diameter).
  • Clutch Parts: Often prefixed with C.
  • Repair Kits: If you see "K" or "KIT" in the description, it refers to the rubber seals and springs, not the entire metal body.

Note: Seiken parts are often cross-referenced by the OEM part number. If you cannot find the Seiken number, searching the catalogue by the vehicle's OEM number is the most reliable method.

Search filters:

  • By machine manufacturer (Toyota, Komatsu, Caterpillar, Hyster)
  • By component type (brake vs. clutch)
  • By cylinder bore diameter
  • By cross-reference to other brands (Nabco, Aisin, Bendix)

Maintenance Schedule: When to Replace Seiken Hydraulic Parts

The catalogue is not just for ordering; it is a guide for preventative maintenance. Based on Seiken’s engineering data, replace these components according to the following schedule:

  • Brake Master Cylinder: Every 200,000 km or when pedal sinks slowly under pressure.
  • Clutch Slave Cylinder: Inspect every 50,000 km; replace if boot shows fluid residue.
  • Rubber Cups & Seals: Replace every 2 years regardless of mileage (rubber degrades).

Using the catalogue proactively allows you to stock the most common failure parts for your fleet. For a fleet of 10 Mitsubishi Can ters, you would note the catalogue numbers for front wheel cylinders (S-WC-112), rear wheel cylinders (S-WC-114), and clutch slaves (S-CS-045).

6. Digital Catalogue Access

Most Seiken catalogues are now distributed digitally.

  • Format: Usually PDF or Online Database (WebCat).
  • Search Function: If using a digital version, press Ctrl+F and type your Vehicle Model Code (e.g., "Hilux" or "NKR"). Do not search by generic descriptions like "brake cylinder," as you will get thousands of results.

Method B: By OEM Number (Interchange)

This is the fastest method if you are ordering online or using a digital database.

  1. Locate the OEM (Original Equipment) part number stamped on your current part or found in the vehicle service manual.
  2. Look at the Cross-Reference Index in the back of the Seiken catalogue.
  3. Match the OEM number to the Seiken number.