Norgren Fuel Tank Caps User Manual

Features

Norgren GT Development fuel caps incorporate
a unique combination of thermal, venting and
pressure relief to protect the fuel system in the
event of a fire or a roll over. These devices ensure
that diesel fuel is not released prematurely,
while minimizing the opportunity for pressure to
build-up inside the tank. The safety devices are
engineered into rugged, aluminum die-castings
that stand up to daily use and abuse. All designs
meet or exceed FHWA guidelines for leakage,
drop tests and flame tests.

Norgern GT also offers closure-only caps which
are custom designed for special applications
where a separ ate fuel tank vent is located in the
fuel tank.

Fuel Tank Caps

Performance

Application
Material
Options
Sizes
Part Numbers

* Please contact your lo cal Norgre n technical representati ves.

Fuel tank caps for vehicle gas and diesel fuel tanks
Aluminum die-casting
Matching locking, venting, safety features*
2", 2.5", 3", 3.5", and 4"
31302-1, 8103, 8105 -2, 8110-1, 8111-1, 8120, 8121, 8130-1, and 8131-1

REV: 8/14 01

Our policy is one of continued research and development. We therefore reserve the right to amend,

without notice, the specifications given in this document.

© Norgren GT Development Corporaton, 2014

Fuel Tank Caps

Part
Number

313 02-1 2-11.5 NPSM No No No No No 4.5" 10.0" None 2" Closure only

8103 2-11.5 NPSM Yes Yes Yes No Yes 4.0" 12" GT logo 2" Full function

8105-2 2.5-8 UN Yes Yes Yes No No 4.0" 12" GT logo Mack

8110 -1 3-8 NPLS straight

8111-1 3-8 NPLS straight

Cap size /
Thread size

pipe thd

pipe thd

Thermal
Relief

Yes Yes Yes No No 7.0 " 12" GT logo Western Star

Yes YES Ye s Yes No 7.0" 12" GT logo Volvo

Pressure
Relief

Venting Locking Chrome Stay

Dimensions

Chain
Length

Customer Cover
Disk Markings

GT generic to
support
Aftermarket

cap (see thread
size)

cap chrome (see
thread size)

8120-1 3.5-5.5 custom thd Yes Yes Ye s No No 7.0 " 12" GT logo Western Star

8121-1 3.5-5.5 custom thd Yes Yes YES Yes No 7.0" 12" GT logo Volvo

813 0-1 4-8 NPSM Yes Yes Ye s No No 8.5" 12.0" GT logo Kenworth

8131-1 4-8 NPSM Ye s Yes Yes Ye s No 8.5" 12.0" GT logo Kenworth

Our policy is one of continued research and development. We therefore reserve the right to amend,

without notice, the specifications given in this document.

© Norgren GT Development Corporaton, 2014

REV: 8/1402