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Fitment checkOEM number, engine model, and machine model confirmation.
Manual quotePrice, MOQ, stock, lead time, and replacement options.
Export supportPacking notes, mixed order support, and shipping details.
Product Details
Product Overview
This premium quality piston with pin assembly is specifically engineered for Perkins 1103 and 1104 series industrial diesel engines. Designed to meet or exceed OEM specifications, this component (Part Numbers: 3135M121, 4115P025) ensures reliable performance, reduced oil consumption, and extended service life for your Perkins-powered equipment. With our global supply chain, we ship directly to major industrial centers across North America, Europe, Southeast Asia, and the Middle East, serving sectors including construction, agriculture, power generation, and material handling.
Key Features & Benefits
Precision Engineering: Manufactured using high-strength aluminum alloy with a reinforced crown for superior heat dissipation and resistance to thermal cracking.
Enhanced Durability: Features a precisely ground piston skirt with optimized clearance to reduce friction and minimize cylinder bore wear.
Improved Sealing: Designed with advanced ring groove geometry for optimal oil control and compression, reducing blow-by and improving fuel efficiency.
Direct Fitment: Includes a fully machined, case-hardened piston pin for a secure, wobble-free connection to the connecting rod, ensuring straightforward installation.
OEM Quality: Manufactured under strict ISO 9001 quality control standards, ensuring dimensional accuracy and interchangeability with original Perkins parts.
Technical Specifications
Specification
Detail
Part Number
3135M121 / 4115P025
Engine Series
Perkins 1103, 1104
Specific Models
1103C-33T, 1103A-33T, 1104A-44T
Material
High-strength Aluminum Alloy
Pin Type
Full Floating, Case-Hardened Steel
Ring Grooves
3 (2 Compression, 1 Oil Control)
Application
Industrial, Generator, Agricultural
OEM Cross-Reference
This piston with pin is a direct replacement for the following genuine Perkins part numbers:
3135M121 (Complete Piston Assembly)
4115P025 (Alternative OEM Reference)
U5MK0083 (Perkins Service Part)
3135A010 (Related Piston Kit)
Note: Always verify your engine’s serial number to ensure correct fitment.
Compatibility
This piston assembly is compatible with the following Perkins engine models:
Common Applications: Industrial generators, forklifts, agricultural tractors, excavators, and skid steer loaders.
Global Supply & Distribution
We maintain a robust global logistics network to ensure fast and reliable delivery. Our standard shipping options include:
Express: DHL, FedEx, UPS (3-7 business days to major cities worldwide).
Air Freight: Available for urgent orders to international airports.
Sea Freight: Cost-effective FOB/CIF shipping to major ports (Shanghai, Rotterdam, Los Angeles, Dubai).
Major Markets Served: North America, United Kingdom, Germany, Australia, UAE, South Africa, Brazil, and Southeast Asia.
We have extensive export experience and comply with all international trade regulations, providing necessary documentation for customs clearance.
Quality Assurance
Manufacturing Standards: Produced in ISO 9001:2015 certified facilities.
Testing: 100% dimensional inspection and hardness testing conducted before shipment.
Warranty: 12-month warranty against manufacturing defects from the date of purchase.
Certification: Material test reports available upon request.
FAQ
Q1: How do I confirm this piston fits my specific Perkins engine?
Please check the engine model plate located on the valve cover or side of the engine block. Look for the model number (e.g., 1104A-44T) and the engine serial number. Cross-reference these with the part numbers 3135M121 or 4115P025. If your engine is a 1103 or 1104 series with a turbocharger (indicated by “T” in the model name), this piston is the correct fit.
Q2: Does this piston come with piston rings and the pin clip?
This product includes the piston and the piston pin. It does not include the piston rings or the retaining circlips. We recommend ordering a separate piston ring set (e.g., U5MK0084 or 3135A012) and new circlips for a complete overhaul.
Q3: What is the recommended installation procedure for this piston?
Always follow the Perkins service manual for your specific engine. General steps include: 1) Ensure the cylinder bore is clean and within specification. 2) Lubricate the piston pin, rings, and cylinder wall with clean engine oil. 3) Use a proper piston ring compressor to install the piston into the bore. 4) Ensure the arrow on the piston crown points towards the front (flywheel end) of the engine. 5) Torque the connecting rod bolts to the manufacturer’s specification.
Our advantages
1.An authorized wholesaler of Isuzu genuine parts, Hino genuine parts, Mitsubishi genuine parts and Mahle parts.
2. We are not only supply genuine parts, but also high quality OEM parts, which are made in China or made in Japan.
3. More than 10 years of experience in machinery parts, professional supply of diesel engine parts.
4. Fast delivery, the fastest can be shipped in one day ,more than 500,000 of different types parts in stock.
5. Scientific ERP system, easy and fast to locate the parts that customer needs.
6. Professional technician checks the parts before delivery, to make sure the parts are correct, usable and defect-free.
Exhibition
Packing&Shipping
1. Our shipment is by air/sea/express (DHL/FEDEX/TNT/UPS/EMS).
2. Once we get confirmation of payment, we will ship products in 2 days.
3. Our packaging is standard export wooden box or others as your requirement.
4. We’ll check and test the products before shipping , and givethe pictures to our customers to confirm.
FAQ
Q1. What is your company major products?
A: Our main products are Liner kit, Piston, Rings, Liner, Gasket kit, Bearing, Injection pump, Nozzle, Water pump, Oil pump,Crankshaft, Turbocharger,Filter, etc.
Q2.What is the MOQ?
A: Normally we can supply any quantity if we have in stock.
Q3. What is your payment term ?
A: We accept Western Union, T/T, Paypal.
Q4. What is the packing ?
A: Carton or wooden case , If you want to put your logo on the packing , We will do it after get your authorization letter.
Q5. When can you deliver products after payment ?
A: By Express ,usually might take 3-4 days ;By Air , Usually take 7-9 days ; By Sea ,usually take 1-2 months .
Q6. What can you do to complete order perfectly ?
A: In the beginning , We will communicate with clients in details to understand what they need .
Before packing , We will check the products and send photos to clients .After confirmation ,
We will packing products well to avoid damage . Once we get tracking number ,
We will send it to customer and keep contact in with clients .
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