Air Cleaner Dust Ejection Valve 6655937 6666378 Fit for Bobcat 331 334 337 341
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.
Air Cleaner Dust Ejection Valve 6655937 6666378 for Bobcat 331 334 337 341
This air cleaner dust ejection valve with part numbers 6655937 and 6666378 is a replacement component designed to expel debris from the intake system for select Bobcat compact excavators and loaders.
Overview
This dust ejection valve is a critical intake component that automatically removes dirt and moisture from the air cleaner housing, preventing clogging and maintaining engine airflow. It is built as a direct replacement for OEM cross-reference numbers 6655937 and 6666378, and is designed to fit a range of Bobcat compact equipment models. The air cleaner dust ejection valve ensures consistent engine performance in dusty operating conditions.
Built For Performance
- Self-actuating duckbill design opens automatically to release trapped dust and water
- High-quality rubber compound remains flexible in cold weather for reliable operation
- Precision-fit mounting flange provides a tight seal against the air cleaner housing
- Matches OEM specifications for 6655937 and 6666378
- Lightweight yet durable construction withstands constant vibration
Fits These Machines
- for Bobcat 331
- for Bobcat 334
- for Bobcat 337
- for Bobcat 341
On-The-Job Use
- Commonly used on compact excavators operating in construction trenches and demolition sites
- Effective for skid-steer loaders moving aggregate, soil, or mulch
- Supports agricultural tasks involving tilling, planting, or hauling in dry fields
- Applicable for landscaping jobs requiring frequent movement through dusty terrain
Specs At A Glance
| Part Number(s) | 6655937, 6666378 |
| Type | Air Cleaner Dust Ejection Valve |
| Material | Rubber |
| Compatible Brands | for Bobcat |
Good To Know
Q: How does the dust ejection valve work? A: It uses a flexible duckbill that opens under pressure from internal air pulses, releasing trapped dust and moisture. This keeps the air cleaner element operating at peak efficiency.
Q: Can this valve be used on other Bobcat models beyond the listed ones? A: It may fit other models with the same air cleaner housing, but only the 331, 334, 337, and 341 are confirmed compatible. Check your machine's part number before purchase.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.