Filler Cap 3999758

positive OEM
Cummins
Part# 3999758
note
Seals fuel tanks to prevent spillage and vapor loss in heavy-duty trucks.
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Description

The Cummins Fuel Filler Cap (3999758) is a component designed to securely seal fuel tanks in heavy-duty trucks. It controls fuel entry, prevents spillage, and maintains fuel system integrity by sealing the tank and containing fuel vapors. This cap supports safe and efficient fuel system operation under demanding conditions.

Key Specifications

  • Application: K38, K50, QSK50 CM2150, QSK50 CM2150 MCRS, QSK60 CM850 MCRS, K107 engines
  • Function: Seals fuel tank, prevents vapor escape
  • Compatibility: Heavy-duty truck fuel systems
  • Construction: Durable materials with advanced sealing mechanism
  • Features: Tight seal, vapor containment, fuel spillage prevention
  • Quality: OEM Cummins part

Shipping Info

Next Day Air services are available for In Stock items. Our shipping cutoff time is Monday - Friday 4:30pm Eastern Standard Time (EST). 

 

For more shipping information, please see our Shipping & Delivery page.

More Information

Current Part# 3999758
Type OEM
Part# variations 3999758 CUM,
3999758CUM
Manufacturer Cummins
Warranty Standard Manufacturer Warranty