Fuel tank caps – Norgren Fuel Tank Caps User Manual
Page 2
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
REV: 8/14
02
Part
Number
Cap size /
Thread size
Thermal
Relief
Pressure
Relief
Venting
Locking
Chrome
Stay
Dimensions
Chain
Length
Customer Cover
Disk Markings
GT generic to
support
Aftermarket
31302-1
2-11.5 NPSM
No
No
No
No
No
4.5"
10.0"
None
2" Closure only
cap (see thread
size)
8103
2-11.5 NPSM
Yes
Yes
Yes
No
Yes
4.0"
12"
GT logo
2" Full function
cap chrome (see
thread size)
8105-2
2.5-8 UN
Yes
Yes
Yes
No
No
4.0"
12"
GT logo
Mack
8110-1
3-8 NPLS straight
pipe thd
Yes
Yes
Yes
No
No
7.0"
12"
GT logo
Western Star
8111-1
3-8 NPLS straight
pipe thd
Yes
YES
Yes
Yes
No
7.0"
12"
GT logo
Volvo
8120-1
3.5-5.5 custom thd Yes
Yes
Yes
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
8130-1
4-8 NPSM
Yes
Yes
Yes
No
No
8.5"
12.0"
GT logo
Kenworth
8131-1
4-8 NPSM
Yes
Yes
Yes
Yes
No
8.5"
12.0"
GT logo
Kenworth