LF3970 Oil Lube Filter for Fleetguard Cummins ISB QSB 5.9L 6.7L Diesel Engine 6

Product Overview

The 6X LF3970 Oil Lube Filter is a high-efficiency spin-on filter designed for Cummins ISB and QSB diesel engines. This oil lube filter removes soot, metal particles, and sludge from engine oil, protecting critical internal components. Each LF3970 oil filter meets strict filtration standards for heavy-duty on-highway and off-road applications.

Key Features & Performance

• Synthetic blend media captures fine contaminants down to micron level
• Anti-drainback valve prevents dry starts and maintains oil prime
• High-capacity pleated design extends service intervals
• Robust steel canister withstands high oil pressures in diesel engines
• Pre-installed gasket ensures a positive seal and leak-free installation
• Meets or exceeds Fleetguard original filter specifications

Fitment & Compatibility

• Cummins ISB 5.9L diesel engine
• Cummins ISB 6.7L diesel engine
• Cummins QSB 5.9L diesel engine
• Cummins QSB 6.7L diesel engine

Common Uses

• Routine oil and filter changes on Cummins-powered trucks and equipment
• Fleet preventive maintenance schedules
• Engine overhauls and initial start-up protection
• Marine, construction, and agricultural diesel engine service

Technical Specifications

• Part Number(s): LF3970
• Quantity: 6 filters
• Engine Compatibility: Cummins ISB 5.9L, ISB 6.7L, QSB 5.9L, QSB 6.7L

Frequently Asked Questions

Q: How often should I replace the LF3970 oil filter? A: Follow the engine manufacturer’s recommended oil change interval—typically every 15,000–25,000 miles for on-highway use or per hours of operation for off-highway equipment.

Q: Is this filter compatible with synthetic diesel engine oils? A: Yes, the filter media and construction are fully compatible with conventional, synthetic blend, and full synthetic diesel oils.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.