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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
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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
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0.85
10" ± 1/2"
0.85
2.95
Dimensions (Inches)
Fuel Tank Caps
31302
8103 and 8105
ø 2.95
0.92
2.00
± 0.03
WIRE STAY
4.00 ± 0.13
ø 3.20
THERMAL RELIEF
MECHANISM
CHAIN LENGTH 12"
8110-1
ø 4.0
7.00 ± 0.50
0.86
1.70
REF
8111-1
1.70
REF
ø 4.0
0.86
7.00 ± 0.50
REV: 8/14 03
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
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Fuel Tank Caps
Dimensions (Inches)
8120
8121
8130
ø 5.20
ø 4.0
7.00 ± 0.50
ø 4.95
0.86
1.70
REF
8131
1.70
REF
ø 5.20
0.86
ø 4.0
7.00 ± 0.50
ø 4.95
ENVIRONMENTAL
SEAL
PRESSURE RELIEF
POPPET ASSEMBLY
1.08
2.00
± 0.03
THERMAL RELIEF
MECHANISM
CHAIN LENGTH 12"
8.50 ± 0.25
Warning
Improper selection, misuse, age or malfunction of components used in
commercial vehicle systems can cause failure in various modes. The system
designer is warned to consider the failure modes of all component parts
used in commercial vehicle systems and to provide adequate safeguards to
prevent personal injury or damage to equipment or property in the event of
such failure modes. System designers and end users are cautioned to consult
instruction sheets and specifications available from the factor y. The system
designer/end user is responsible for verif ying that all requirements for the
application are met.
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
1.08
2.00
± 0.03
THERMAL RELIEF
MECHANISM
CHAIN LENGTH 12"
8.50 ± 0.25
Warranty
The products described herein are warranted subject to seller’s Standard
Terms and Condition of Sale, available at seller’s website.
REV: 8/1404
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