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Spectra premium GM2127A tank fuel cap

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Old Apr 29, 2026 | 03:43 PM
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TA392's Avatar
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Spectra premium GM2127A tank fuel cap

I have read before about the original fuel cap will not fit. Anyone know what cap works with the replacement Spectra GM2127A fuel tanks >?
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Old Apr 29, 2026 | 06:06 PM
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Firechicken82's Avatar
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From: CT
Car: 82 TA
Engine: Zz430 clone w a torquestorm blower
Transmission: Magnum f
Axle/Gears: Ford 9 w 4.11
Re: Spectra premium GM2127A tank fuel cap

My 82 cap didnt fit. There was a recommended cap w the tank paperwork. I just went out and looked for a brand/part no but couldn't find any on the cap. I think it was for a 90s Chevy gas truck.
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Old Apr 29, 2026 | 06:35 PM
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From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: Spectra premium GM2127A tank fuel cap

The cap from a 4th gen fit for me.
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Old Apr 29, 2026 | 06:45 PM
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Re: Spectra premium GM2127A tank fuel cap

Thanks for the replies.
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