2004 Buick Park Avenue Parts
The 2004 Buick Park Avenue came with 2 engines (3.8L V6, 3.8L V6 Supercharged), and the right parts depend on which one you have. We list 1,400 parts across all of them — each category page below covers every engine, and each row shows which engine(s) it fits.
Parts include OEM and aftermarket brands with full part numbers and application notes — position, trim and market qualifiers — so what you order matches what the factory catalog actually specifies for this vehicle.
Browse by Engine
3.8L V6
638 parts · 4 categories Verified fitment3.8L V6 Supercharged
762 parts · 4 categories Verified fitmentNot sure which engine you have? Check the emissions label under the hood, your registration, or decode the VIN — the 8th character usually identifies the engine.
Parts by Category
Belt Drive Parts
107 parts · 4 subcategories · 16 brands Verified fitment Spins the accessories — serpentine and V-belts, tensioners, idlers and pulleys.Body & Lamp Assembly Parts
229 parts · 34 subcategories · 27 brands Verified fitment Covers the exterior panels, bumpers, mirrors, lamps and the trim that keeps weather and road debris out.Brake & Wheel Hub Parts
916 parts · 31 subcategories · 48 brands Verified fitment Handles stopping power and keeps each wheel turning true on its bearing and hub assembly.Cooling System Parts
148 parts · 19 subcategories · 40 brands Verified fitment Keeps operating temperature in the narrow band the engine was designed for, from radiator and water pump to thermostat and hoses.Each category page covers all 2 engine options for the 2004 Buick Park Avenue — every part shows the engine(s) it fits, and an on-page filter narrows it to yours.
Confirm your configuration
Other Buick Park Avenue Years
Getting Fitment Right on the 2004 Buick Park Avenue
Most wrong-part orders for the 2004 Buick Park Avenue trace back to the engine choice: with 2 options listed, components that look interchangeable — cooling parts, tensioners, mounts, sensors — often carry different part numbers per engine. Each row shows which engine(s) it fits, and each category page filters to one engine at a time.
Every part across the 4 categories shows its brand and manufacturer part number. Use the number to cross-reference: match it to the part coming off the vehicle, compare an OEM-supplier part against its aftermarket equivalent, or verify a shop's estimate line by line. When a number is discontinued, the same-fitment parts around it are the fastest path to a current replacement.
Frequently Asked Questions
How many parts fit the 2004 Buick Park Avenue?
We list 1,400 parts for the 2004 Buick Park Avenue, organized into 4 categories across 2 engine options. Every part includes the brand, manufacturer part number and fitment notes.
Which engines came in the 2004 Buick Park Avenue?
Our records list 3.8L V6, 3.8L V6 Supercharged. Parts frequently differ between them — a part verified for one engine is not guaranteed to fit another — so identify your engine first (emissions label under the hood, or the VIN's 8th character), then use the engine filter on each category page.
Are OEM and aftermarket parts both available for the 2004 Buick Park Avenue?
Yes — parts come from original-equipment suppliers and established aftermarket brands, shown side by side with their part numbers where both cover the same fitment. Cross-referencing those numbers is how you confirm an aftermarket part genuinely replaces the OEM one.
How do I verify a part number fits my 2004 Buick Park Avenue?
Search the number on this site: the result shows the part, its brand and every configuration with published fitment. If your exact year, model and engine appear in that list, the number is a match. The notes column carries any remaining qualifiers — position, trim or production date.
Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.