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Precision Engineered Spare Parts

Engineered for
extreme conditions.

Precision spare parts for marine and locomotive diesel engines. Cylinder covers, pistons, liners, bearings, crankshafts, and connecting rods — manufactured to micron tolerances, delivered worldwide.

SPECIFICATIONSCATALOG 2026
CYLINDER COVERS
TOLERANCE
PISTONS
TOLERANCE
CYLINDER LINERS
TOLERANCE
BEARINGS
TOLERANCE
CRANKSHAFTS
TOLERANCE
CONNECTING RODS
TOLERANCE
COMPATIBLE BRANDSMAN · Sulzer · Wärtsilä · MaK · EMD · Daihatsu · Pielstick
PRODUCT CATALOG

Product Categories

150+ SKUs

Cylinder Cover

Durable cylinder covers for marine & locomotive diesel engines

EXPLORE
200+ SKUs

Piston

High-performance pistons designed for maximum efficiency

EXPLORE
180+ SKUs

Cylinder Liner

Precision-engineered cylinder liners for optimal function

EXPLORE
300+ SKUs

Bearing & Bush

Bearings and bushes for smooth, reliable operation

EXPLORE
90+ SKUs

Crankshaft

Robust crankshafts built to withstand extreme conditions

EXPLORE
120+ SKUs

Connecting Rod

Strong and lightweight connecting rods for superior performance

EXPLORE
ABOUT US

Manufacturing excellence,
since 2008.

Xiamen Union Spares Ltd. was established in 2008 and is a modern enterprise specializing in the supply of industrial equipment spare parts. We are committed to providing high-quality industrial spare parts and professional technical support services to global customers.

The company has a complete supply chain system and professional technical team, and has established long-term cooperative relationships with many well-known brands, ensuring that we provide customers with original genuine products and timely technical support.

YEARS IN OPERATION
20+
PRODUCT MODELS
10,000+
GLOBAL PARTNERS
500+
SATISFACTION RATE
99.7%
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Modern Warehouse Facility

Modern Warehouse Facility

Intelligent management, rapid response

FACTORY

Facility overview.

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Manufacturing Process Overview

Take a virtual tour of our production facility and see how we maintain quality at every step.

CONTACT

Get in touch.

Our technical team is ready to help you find the right spare parts. Contact us for expert advice and competitive pricing.

ADDRESS

Room 202, Jinshan Riches Building

2370 Fangzhong Road, Huli District

Xiamen, China

PHONE

+86 592-5325211

EMAIL

sales@unionspares.net

WEBSITE

www.unionspares.net

SEND INQUIRYTypical response within 24 hours