Diesel Engine Parts
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This high-quality Isuzu K4N Piston Ring Set (Part Number: MM438689) is a critical engine component designed for reliable performance in Isuzu machinery diesel engines. As a direct replacement part, it ensures optimal compression, oil control, and combustion efficiency. We provide global shipping to major industrial markets including North America, Europe, Southeast Asia, the Middle East, and Oceania, ensuring fast and reliable delivery for B2B buyers worldwide.
| Specification | Details |
|---|---|
| Part Number | MM438689 |
| Engine Model | Isuzu K4N (4-Cylinder) |
| Product Type | Piston Ring Set (Set of 3 rings per piston) |
| Material | High-Grade Alloy / Ductile Iron |
| Ring Configuration | Top Ring, Second Ring, Oil Control Ring |
| Surface Finish | Phosphate coated or Chrome plated (depending on variant) |
| Application | Industrial Machinery / Generator Sets |
This piston ring set replaces the following original equipment manufacturer (OEM) numbers:
As a leading supplier of diesel engine parts, we ensure efficient logistics for B2B clients worldwide. Our inventory supports:
Q: Is this piston ring set compatible with the Isuzu 4BG1 engine?
A: The MM438689 is primarily designed for the Isuzu K4N engine. While the 4BG1 series shares similar architecture, we recommend cross-referencing your engine’s bore size (typically 105mm for K4N) and ring groove dimensions to ensure a precise fit. Please consult your engine manual or contact our technical support with your engine serial number.
Q: What is the recommended installation procedure for these rings?
A: Standard diesel engine rebuild procedures apply. Ensure the cylinder bore is honed to the correct crosshatch pattern and within wear limits. Install the rings using a ring expander tool, staggering the ring gaps 120 degrees apart. Lubricate the rings and piston with clean engine oil before assembly. Torque the connecting rod bolts to factory specifications.
Q: How can I verify the quality of the rings before installation?
A: Before installation, check for any visual defects such as cracks or burrs. Measure the ring end gap by inserting the ring into the cylinder bore (at the top of the ring travel) and using a feeler gauge. The end gap should fall within the manufacturer’s service limits (typically 0.30mm to 0.50mm for top rings). If the gap is too tight, the ring may break; if too loose, it will cause blow-by.
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.
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.
A: Our main products are Liner kit, Piston, Rings, Liner, Gasket kit, Bearing, Injection pump, Nozzle, Water pump, Oil pump,Crankshaft, Turbocharger,Filter, etc.
A: Normally we can supply any quantity if we have in stock.
A: We accept Western Union, T/T, Paypal.
A: Carton or wooden case , If you want to put your logo on the packing , We will do it after get your authorization letter.
A: By Express ,usually might take 3-4 days ;By Air , Usually take 7-9 days ; By Sea ,usually take 1-2 months .
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 .
