1981 Pontiac Firebird Hardtop Coupe — 231 cu in Buick V6, 2-barrel, 3-speed Turbo Hydra-Matic automatic

Service topics

5

Factory intervals

4

Fitment-scoped

5

Exact references

1

Before orderingIdentify your engine, options and build date.Part numbers and sizes can change within one model year. Shopping links appear only for catalog-backed references; still verify the listing against your vehicle before ordering.

• 01

  Brake and power-steering inspection

  Sourced interval available

  Applies to: 1981 · United States · The photographed reproduction is identified as GM glovebox schedule part 325131 for 1970–1981 Firebird/Trans Am. It is a readable independent reproduction, not a factory-hosted manual; the records below transcribe only its unambiguous rows, and the schedule itself directs owners to the year-specific owner's manual for additional requirements.

  Published interval: 6,000 mi / 4 months · Check all brake and power-steering lines and hoses; check brake linings and parking-brake adjustment.

  Source: General Motors part 325131 — 1970–1981 Firebird glovebox vehicle-safety maintenance schedule (reproduction photographed by Firebird Central) · Product image of GM schedule 325131 — brakes and power-steering row at every 6,000-mile service · checked 2026-08-30

• 02

  Chassis lubrication and fluid levels

  Sourced interval available

  Applies to: 1981 · United States · The photographed reproduction is identified as GM glovebox schedule part 325131 for 1970–1981 Firebird/Trans Am. It is a readable independent reproduction, not a factory-hosted manual; the records below transcribe only its unambiguous rows, and the schedule itself directs owners to the year-specific owner's manual for additional requirements.

  Published interval: 6,000 mi / 4 months · Lubricate the chassis and check all fluid levels.

  Source: General Motors part 325131 — 1970–1981 Firebird glovebox vehicle-safety maintenance schedule (reproduction photographed by Firebird Central) · Product image of GM schedule 325131 — chassis row at every 6,000-mile service · checked 2026-08-30

• 03

  Suspension, exhaust, and tire inspection

  Sourced interval available

  Applies to: 1981 · United States · The photographed reproduction is identified as GM glovebox schedule part 325131 for 1970–1981 Firebird/Trans Am. It is a readable independent reproduction, not a factory-hosted manual; the records below transcribe only its unambiguous rows, and the schedule itself directs owners to the year-specific owner's manual for additional requirements.

  Published interval: 6,000 mi / 4 months · Check tire condition at each service and pressure at least monthly. Check the front and rear suspension, steering system, exhaust, and underbody every 12,000 miles or 8 months; rotate tires as indicated by wear.

  Source: General Motors part 325131 — 1970–1981 Firebird glovebox vehicle-safety maintenance schedule (reproduction photographed by Firebird Central) · Product image of GM schedule 325131 — suspension/steering and exhaust rows at alternating 6,000-mile columns; tires and wheels row with monthly pressure note · checked 2026-08-30

• 04

  Engine air-cleaner element

  Sourced interval available

  Applies to: 1981 · United States · The photographed reproduction is identified as GM glovebox schedule part 325131 for 1970–1981 Firebird/Trans Am. It is a readable independent reproduction, not a factory-hosted manual; the records below transcribe only its unambiguous rows, and the schedule itself directs owners to the year-specific owner's manual for additional requirements.

  Published interval: 12,000 mi / 8 months · Replace the air-cleaner element; service sooner when conditions require.

  Source: General Motors part 325131 — 1970–1981 Firebird glovebox vehicle-safety maintenance schedule (reproduction photographed by Firebird Central) · Product image of GM schedule 325131 — air-filter row at alternating 6,000-mile service columns · checked 2026-08-30

• 05

  Engine oil filter — catalog fitment

  Exact reference available

  Manufacturer-catalog fitment scoped to the exact 1981 Firebird engine listing; K&N supplies the 4.4L row omitted from Baldwin's Firebird table.

  Baldwin B43-S cataloged fitment

  This manufacturer application record establishes filter fitment only; it does not alter the separately sourced service schedule.

  Applies to: 1981 · 231 cu in Buick V6, 2-barrel · United States · Baldwin's exact 1981 Firebird V6-231 (3.8L) 2-barrel, code A row assigns B43-S; confirm the engine code and installed filter before ordering.

  Source: Parker/Baldwin Filters — 2025 Automotive Applications catalog · PDF page 935, Pontiac 1981 Firebird V6-231 (3.8L) 2-barrel, code A row — Lube — B43-S · checked 2026-08-31

  Verified ordering references

  • Validated equivalentBaldwin B43-S

    Qty. 1 · Engine lubricating-oil filter · catalog-listed

    Cataloged for the 1981 Firebird V6-231 (3.8L) 2-barrel, code A; verify engine code and installed dimensions.

    Catalog: Parker/Baldwin Filters — 2025 Automotive Applications catalog · PDF page 935, Pontiac 1981 Firebird V6-231 (3.8L) 2-barrel, code A row — Lube — B43-S · checked 2026-08-31

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