Product Details

Product Overview

This high-quality Crankshaft Front Oil Seal (Part Numbers: 4955383, 4101504) is a direct replacement component specifically engineered for the Cummins QSX15 diesel engine. As a critical sealing component, it prevents oil leakage from the front of the crankshaft, ensuring optimal lubrication and engine longevity. We are a global supplier of heavy-duty engine parts, serving major markets including North America, Europe, Southeast Asia, the Middle East, and Australia. Our inventory supports fast, reliable shipping to industrial hubs and ports worldwide.

Key Features & Benefits

• Precision Engineering: Manufactured to meet or exceed OEM specifications for a perfect fit and reliable seal.
• Durable Material: Constructed from high-grade rubber and metal casing to withstand extreme temperatures, pressure, and rotational speeds.
• Leak Prevention: Specifically designed to stop oil seepage at the front crankshaft, protecting the belt system and environment.
• Long Service Life: Built for extended durability in heavy-duty applications, reducing downtime and maintenance frequency.
• Direct Replacement: Easy to install with no modifications required, matching the original part dimensions exactly.

Technical Specifications

OEM Cross-Reference

This seal is a direct replacement for the following OEM and industry-standard part numbers:

• Cummins OEM: 4955383, 4101504
• Alternative Numbers: 4955383NX, 4101504RX (Verify fitment with your specific engine serial number)

Compatibility

• Engine Series: Cummins QSX15
• Applications: Heavy-duty trucks, construction machinery, mining equipment, industrial generators, and marine vessels utilizing the QSX15 platform.
• Note: Always verify the engine serial number and existing seal dimensions (Inner Diameter, Outer Diameter, Width) to ensure correct fitment for your specific model variant.

Global Supply & Distribution

• Shipping: We offer worldwide shipping via air, sea, and express couriers (DHL, FedEx, UPS, TNT).
• Major Markets: North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands, France), Asia-Pacific (China, Singapore, Australia), Middle East (UAE, Saudi Arabia, Qatar), and Africa.
• Logistics: Fast delivery to major ports (Rotterdam, Shanghai, Singapore, Houston, Jebel Ali) and industrial centers.
• Export Compliance: Experienced in international trade documentation and customs clearance.

Quality Assurance

• Standards: Manufactured under strict ISO 9001 quality management systems.
• Testing: Each seal undergoes dimensional inspection and material hardness testing to ensure reliability.
• Warranty: 12 months standard warranty against manufacturing defects under normal operating conditions.

FAQ

Q: Is this seal a direct fit for my Cummins QSX15 engine?
A: Yes, this seal (4955383/4101504) is the OEM specification for the front crankshaft position on the QSX15. However, due to minor engineering updates over the years, we recommend verifying the outer diameter and inner diameter of your old seal against the new one before installation.

Q: What are the signs of a failing crankshaft front oil seal?
A: Common symptoms include oil dripping from the front of the engine (behind the harmonic balancer), oil contamination on the serpentine belt, and a noticeable oil smell. If left unchecked, a bad seal can lead to low oil pressure and engine damage.

Q: Do I need any special tools to install this seal?
A: While a skilled mechanic can install it with standard tools, it is highly recommended to use a seal driver kit or a large socket to press the seal in evenly. Installing it crooked can cause immediate leakage. Always lubricate the seal lip with engine oil before installation and ensure the crankshaft surface is clean and free of burrs.

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 .