Spectra GM20B Fuel Tank

Brand Spectra GM20B
Fits Pontiac, Buick, Oldsmobile, and Cadillac · 53 vehicles

OE direct replacement. Meets or exceeds original equipment performance.

Fuel tank engineered with advanced manufacturing and quality control.

Cross-references 1495, 1525 and 1563 for the same application. See all 15.

$179.21Free shipping
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Spectra GM20B Fuel Tank Overview

The Spectra GM20B fuel tank is an OE-style replacement for select full-size GM and Cadillac applications from 1989-1997. It is built to match original equipment dimensions and fitment details for a direct replacement on supported vehicles.

  • OE-style fuel tank replacement for select Buick, Cadillac, Oldsmobile, and Pontiac models
  • Built with engineering and manufacturing controls aimed at meeting or exceeding original equipment performance
  • Dimensions listed at 40-1/8 in. x 28-1/2 in. x 11-1/2 in. for the covered applications
  • Lock ring kit included
  • Fits applications with no hole on top of the tank for the pressure sensor where noted

Fitment Details

Compatible with 1989-1995 Buick LeSabre, 1991-1996 Buick Park Avenue, 1989-1993 Cadillac Commercial Chassis, 1989-1993 Cadillac DeVille, 1989-1992 Cadillac Fleetwood, 1993 Cadillac 60 Special, 1989-1991 Oldsmobile Delta 88, 1992-1995 Oldsmobile 88, 1989-1995 Oldsmobile 98, 1989-1995 Pontiac Bonneville, and 1996-1997 Pontiac Bonneville. The Spectra GM20B is also referenced by part number GM20B for these applications.

Common Replacement Uses

  • Replacing a leaking or rusted fuel tank
  • Restoring proper fuel storage capacity after tank damage
  • Addressing fuel odor caused by tank corrosion or seepage
  • Correcting fitment issues from a damaged original tank
  • Replacing a tank that no longer seals properly at the lock ring area

Installation Notes

Verify tank dimensions, sender configuration, and pressure sensor hole requirements before installation. Confirm vehicle fitment by year, make, and model, especially on 1996-1997 Pontiac Bonneville and other listed GM platforms. Inspect related fuel system components, including straps, seals, and lines, before installing the replacement tank.

Quality Assurance

Spectra Premium fuel tanks are engineered and manufactured with quality control processes intended to match original equipment specifications for the listed applications. This part cross-references FLGM20B for the same application.

This part fits 53 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelBody TypeDrive TypeLitersCylindersPositionNotes
1997PontiacBonneville——3.8LV6N/A40-1/8 in. x 28-1/2 in. x 11-1/2 in.; Lock Ring Kit Included; w/o Hole On Top Of the Tank For Pressure Sensor
1996BuickPark Avenue——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1996PontiacBonneville——3.8LV6N/A40-1/8 in. x 28-1/2 in. x 11-1/2 in.; Lock Ring Kit Included; w/o Hole On Top Of the Tank For Pressure Sensor
1995BuickLeSabre——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1995BuickPark Avenue——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1995Oldsmobile88——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1995Oldsmobile98——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1995PontiacBonneville——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1994BuickLeSabre——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1994BuickPark Avenue——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1994Oldsmobile88——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1994Oldsmobile98——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1994PontiacBonneville——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1993BuickLeSabre——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1993BuickPark Avenue——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1993Cadillac60 Special——4.9LV8N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1993CadillacCommercial Chassis——4.9LV8N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1993CadillacDeVille——4.9LV8N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1993Oldsmobile88——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1993Oldsmobile98——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1993PontiacBonneville——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1992BuickLeSabre——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1992BuickPark Avenue——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1992CadillacCommercial Chassis—FWD4.9LV8N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1992CadillacDeVille——4.9LV8N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1992CadillacFleetwood——4.9LV8N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1992Oldsmobile88——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1992Oldsmobile98——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1992PontiacBonneville——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1991BuickLeSabre——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1991BuickPark Avenue——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1991CadillacCommercial Chassis——4.9LV8N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1991CadillacDeVille——4.9LV8N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1991CadillacFleetwood——4.9LV8N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1991Oldsmobile98——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1991OldsmobileDelta 88——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1991PontiacBonneville——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1990BuickLeSabreSedan—3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1990BuickLeSabreCoupe—3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1990CadillacCommercial Chassis——4.5LV8N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1990CadillacDeVille——4.5LV8N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1990CadillacFleetwood——4.5LV8N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1990Oldsmobile98——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1990OldsmobileDelta 88——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1990PontiacBonneville——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1989BuickLeSabreSedan—3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1989BuickLeSabreCoupe—3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1989CadillacCommercial Chassis——4.5LV8N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1989CadillacDeVille——4.5LV8N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1989CadillacFleetwood——4.5LV8N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1989Oldsmobile98——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1989OldsmobileDelta 88——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
1989PontiacBonneville——3.8LV6N/AFuel Tank - Dimensions: 40-1/8 in. x 28-1/2 in. x 11-1/2 in. with Lock Ring Kit Included
Directly replaces or cross-references 15 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
14951525156357633857633925625215FLGM20BFT545IGM20BKGM20BKGM20CRGM20BRGM20CTGM20BTNKGM20B