Front Crankshaft Oil Seal 3904353 4988952 for JCB Fastrac 3170
Let Northline Parts Do the Heavy Lifting for You!
Not sure which part you need? Our team can help you find the right replacement.
Parts Support Hours: Monday–Friday, 8:00 AM–5:00 PM CT
Live Chat: Available 24/7
I reached out for some replacement head bolts and they responded quickly with a few questions and cautionary information and is sending me some bolts. Great customer service! Thanks
Edward H. — Verified customer
Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
- JCB Fastrac 3170
- JCB Fastrac 3170-65
- JCB Fastrac 3170-80
Product Overview
Oil collecting behind the front pulley can point to a leaking crankshaft seal once other gasket leaks are ruled out.
This replacement component seals the front end of the crankshaft to help keep engine oil inside the timing-cover area. Match shaft diameter, housing bore, seal depth and engine build.
Key Features & Performance
- Front Crankshaft Oil Seal for JCB Fastrac 3170, 3170-65 and 3170-80 tractors
- Seals the front end of the crankshaft to help keep engine oil inside the timing-cover area
- A crankshaft front seal does not fix leaks from the adjacent timing cover or oil pan
Replaces / Cross-References
- 3904353
- 4988952
What Is Included
One replacement component. Confirm the package photograph and original listing before ordering.
Fitment Notes
Match shaft diameter, housing bore, seal depth and engine build. Applications may vary by model serial number or installed option.
Frequently Asked Questions
Is this an OEM part? No. This listing is for an aftermarket replacement unless explicitly stated otherwise. Manufacturer and part numbers identify the intended application.
How do I confirm fitment? Match shaft diameter, housing bore, seal depth and engine build. Use the equipment serial number and original part number where applicable.
Part Summary
Keywords: Front Crankshaft Oil Seal, JCB Fastrac 3170, JCB Fastrac 3170-65, JCB Fastrac 3170-80, 3904353, 4988952.
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.