1977 Pontiac Firebird Trans Am Hardtop Coupe — 403 cu in Oldsmobile V8, 4-barrel, 3-speed Turbo Hydra-Matic automatic

Service topics

6

Factory intervals

6

Fitment-scoped

6

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

  Engine oil filter

  Exact reference available

  Manufacturer-catalog fitment scoped to the exact engine row in the Firebird application table.

  Applies to: 1977 · United States

  Published interval: 15,000 mi · Replace at the first oil change and every second oil change thereafter; when time rather than mileage controls oil changes, replace at every oil change.

  Source: Pontiac Motor Division — 1977 Pontiac Service Manual, complete vehicle maintenance schedules I and II · Pages OB-2/OB-3, item A-4; explanation on page OB-5 · checked 2026-08-24

  Baldwin B39 cataloged fitment

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

  Applies to: 1977 · 403 cu in Oldsmobile V8, 4-barrel · United States · Baldwin's exact 1977 Firebird V8-403 (6.6L), code K row assigns B39; confirm the engine code and installed filter before ordering.

  Source: Parker/Baldwin Filters — 2025 Automotive Applications catalog · PDF page 938, Pontiac 1977 Firebird V8-403 (6.6L), code K row — Lube — B39 · checked 2026-08-31

  Verified ordering references

  • Validated equivalentBaldwin B39

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

    Cataloged for the 1977 Firebird V8-403 (6.6L), code K; verify engine code and installed dimensions.

    Catalog: Parker/Baldwin Filters — 2025 Automotive Applications catalog · PDF page 938, Pontiac 1977 Firebird V8-403 (6.6L), code K row — Lube — B39 · checked 2026-08-31

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• 02

  Chassis and body lubrication

  Sourced interval available

  Applies to: 1977 · United States

  Published interval: 7,500 mi / 12 months · Whichever comes first.

  Source: Pontiac Motor Division — 1977 Pontiac Service Manual, complete vehicle maintenance schedules I and II · Pages OB-2/OB-3, item A-1; explanation on page OB-4 · checked 2026-08-24

• 03

  Rear axle lubricant

  Sourced interval available

  Applies to: 1977 · United States · Applies when the vehicle is used to pull a trailer.

  Published interval: 15,000 mi · Replace during trailer-towing service.

  Source: Pontiac Motor Division — 1977 Pontiac Service Manual, complete vehicle maintenance schedules I and II · Page OB-5, item A-6 · checked 2026-08-24

• 04

  Front wheel-bearing service

  Sourced interval available

  Applies to: 1977 · United States

  Published interval: 30,000 mi · Clean and repack the front wheel bearings.

  Source: Pontiac Motor Division — 1977 Pontiac Service Manual, complete vehicle maintenance schedules I and II · Pages OB-2/OB-3, item A-9; explanation on page OB-5 · checked 2026-08-24

• 05

  Spark plugs

  Sourced interval available

  Applies to: 1977 · United States · Use the Schedule I or II suffix printed for the engine family on the underhood Vehicle Emission Control Information label; the factory engine-family table on manual page OB-4 controls applicability.

  Published interval: 22,500 mi · Schedule I; replace at the indicated interval.

  Source: Pontiac Motor Division — 1977 Pontiac Service Manual, complete vehicle maintenance schedules I and II · Page OB-2, item C-11 · checked 2026-08-24

  Schedule II engine family

  Applies to: 1977 · United States · Use the Schedule I or II suffix printed for the engine family on the underhood Vehicle Emission Control Information label; the factory engine-family table on manual page OB-4 controls applicability.

  Published interval: 30,000 mi · Schedule II; replace at the indicated interval.

  Source: Pontiac Motor Division — 1977 Pontiac Service Manual, complete vehicle maintenance schedules I and II · Page OB-3, item C-11 · checked 2026-08-24

• 06

  Air-cleaner element

  Sourced interval available

  Applies to: 1977 · United States · Use the Schedule I or II suffix printed for the engine family on the underhood Vehicle Emission Control Information label; the factory engine-family table on manual page OB-4 controls applicability.

  Published interval: 30,000 mi / 24 months · Schedule I; replace at the indicated interval.

  Source: Pontiac Motor Division — 1977 Pontiac Service Manual, complete vehicle maintenance schedules I and II · Page OB-2, item C-16 · checked 2026-08-24

  Schedule II engine family

  Applies to: 1977 · United States · Use the Schedule I or II suffix printed for the engine family on the underhood Vehicle Emission Control Information label; the factory engine-family table on manual page OB-4 controls applicability.

  Published interval: 30,000 mi · Schedule II; replace at the indicated interval.

  Source: Pontiac Motor Division — 1977 Pontiac Service Manual, complete vehicle maintenance schedules I and II · Page OB-3, item C-16 · checked 2026-08-24