PN#600172  SKU#12859  Aluminum Non-Locking Fuel Cap. Male, Non-Vented, 4-1/4″ Nominal Size, 8 Threads Per Inch. Nominal Size: 4-1/4″. Threads Per Inch: 8. Across Threads – Filler Neck (inches): 4-1/8″. Across Threads – Cap (inches): 4-1/4″. Safety chain and crossbar are standard. Non-Vented caps are designed for use only on vehicles with properly vented fuel systems. For complete information on current fuel tank system requirements, see Code of Federal Regulations 49 CFR 393.67.
Note: For diesel applications only.