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One Stop Solutions 98054 HVAC Heater Core
| Brand | One Stop Solutions 98054 |
|---|---|
| Fits | Buick and Cadillac · 22 vehicles |
OE direct replacement. Matches original form and function for straightforward installation.
Premium aluminum construction. Built with cadmium-plated tubes to help prevent premature failure.
Pressure tested. Individually tested for dependable performance before it ships.
Cross-references Edelmann 93054 and 394192 for the same application. See all 2.
Heater Core for Buick and Cadillac HVAC Repair
Restore cabin heat with this OSC Premium new heater core, part number 98054. It is built as an OE-style replacement for vehicles that use an aluminum heater core design, with fitment for select Buick Park Avenue, Cadillac DeVille, and Cadillac Seville applications.
- Premium-grade aluminum construction
- Cadmium-plated tubes inside and out to help resist premature failure
- Individually pressure tested before release
- Includes required foam and related accessories
- Direct replacement for copper-designed heater core applications
Application Details
Compatible With 1997-2005 Buick Park Avenue, N/A; 2000-2005 Cadillac DeVille, N/A; and 1998-2004 Cadillac Seville, N/A. This part number 98054 is also cross-referenced to Spectra Premium 93054 and 394192 for the same application.
OSC heater cores are engineered to match original equipment form and function while using aluminum construction for durability in the HVAC system. The design supports proper coolant-to-air heat transfer inside the heater box, making it a direct replacement choice for Buick Park Avenue and Cadillac DeVille heating system service, as well as Cadillac Seville heater core replacement work.
Common Repair Symptoms
- Weak or inconsistent cabin heat
- Coolant odor inside the vehicle
- Fogging or film on the windshield from heater core leakage
- Coolant loss traced to the HVAC case
- Restricted heat output from a failing core
Installation Notes
Verify vehicle fitment by year and model before installation. Heater core replacement typically requires access to the HVAC case, so inspect hoses, seals, and surrounding components during service. Confirm the cooling system is properly flushed and filled after installation to help protect the new core.
Quality Assurance
Each OSC heater core is pressure tested individually before it leaves production. The aluminum construction and plated tubes are used to support long-term service in OE-style HVAC repair applications.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2005 | Buick | Park Avenue | 3.8L | V6 | N/A | — |
| 2005 | Cadillac | DeVille | 4.6L | V8 | N/A | — |
| 2004 | Buick | Park Avenue | 3.8L | V6 | N/A | — |
| 2004 | Cadillac | DeVille | 4.6L | V8 | N/A | — |
| 2004 | Cadillac | Seville | 4.6L | V8 | N/A | — |
| 2003 | Buick | Park Avenue | 3.8L | V6 | N/A | — |
| 2003 | Cadillac | DeVille | 4.6L | V8 | N/A | — |
| 2003 | Cadillac | Seville | 4.6L | V8 | N/A | — |
| 2002 | Buick | Park Avenue | 3.8L | V6 | N/A | — |
| 2002 | Cadillac | DeVille | 4.6L | V8 | N/A | — |
| 2002 | Cadillac | Seville | 4.6L | V8 | N/A | — |
| 2001 | Buick | Park Avenue | 3.8L | V6 | N/A | — |
| 2001 | Cadillac | DeVille | 4.6L | V8 | N/A | — |
| 2001 | Cadillac | Seville | 4.6L | V8 | N/A | — |
| 2000 | Buick | Park Avenue | 3.8L | V6 | N/A | — |
| 2000 | Cadillac | DeVille | 4.6L | V8 | N/A | — |
| 2000 | Cadillac | Seville | 4.6L | V8 | N/A | — |
| 1999 | Buick | Park Avenue | 3.8L | V6 | N/A | — |
| 1999 | Cadillac | Seville | 4.6L | V8 | N/A | — |
| 1998 | Buick | Park Avenue | 3.8L | V6 | N/A | — |
| 1998 | Cadillac | Seville | 4.6L | V8 | N/A | — |
| 1997 | Buick | Park Avenue | 3.8L | V6 | N/A | — |
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