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Four Seasons
Heater CoreFour Seasons 98621 HVAC Heater Core
| Brand | Four Seasons 98621 |
|---|---|
| Length | 7 |
| Thickness | 1-7/8 |
| Width | 5-7/8 |
| Core Material | Aluminum |
| Adjustable Pipe Positioning | No |
| Core Depth IN | 1.875 |
| Core Height IN | 7.000 |
| Core Width IN | 5.875 |
| Description | Heater cores |
| Meets / Exceeds OEM? | Yes |
| Style | Aluminum heater core |
| Tube 1 IN | 0.625 |
| Tube 1 MM | 15.875 |
| Tube 2 IN | 0.750 |
| Tube 2 MM | 19.050 |
| Type | Heater core /aluminum |
| Product line | Heater Core |
| Fits | Ford, Lincoln, and Mercury · 101 vehicles |
OE direct replacement. Meets OEM requirements for a straightforward replacement.
Aluminum construction. Lightweight core material helps support efficient heat transfer.
Heater core. Built as an HVAC heater core for dependable cabin heat.
Cross-references Anchor 8010, APDI 9010130 and Carlson H2346 for the same application. See all 29.
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Not what you need? See all HVAC Heater Core options
Heater Core for Ford, Lincoln, and Mercury Applications
Four Seasons 98621 is an aluminum HVAC heater core built for direct replacement in a wide range of Ford, Lincoln, and Mercury vehicles. It meets or exceeds OEM requirements and is sized for applications that use a compact core with 7.000 in height, 5.875 in width, and 1.875 in depth.
Use this Four Seasons Heater Core when servicing heating performance on vehicles such as the Ford Mustang, Ford Thunderbird, Lincoln Mark VII, and Mercury Cougar. The aluminum core construction supports efficient heat transfer in a replacement part designed around factory-style dimensions.
Key Features
- Part number 98621
- Aluminum heater core construction
- Meets or exceeds OEM specifications
- Core dimensions: 7.000 in x 5.875 in x 1.875 in
- Tube sizes: 0.625 in and 0.750 in
- Four Seasons Heater Core line for HVAC service applications
Detailed Product Overview
The Four Seasons 98621 heater core is a direct-fit HVAC replacement for select Ford, Lincoln, and Mercury models from 1979 through 1993. It is listed for vehicles including the Ford Mustang, Lincoln Mark VII, Ford Thunderbird, Ford Cougar, Mercury Cougar, Lincoln Continental, Ford LTD, Mercury Capri, Mercury Marquis, Ford Fairmont, and Mercury Zephyr. This part cross-references APDI 9010130 and TYC 96027 for the same application.
As an aluminum heater core, this unit is built for efficient coolant-to-air heat exchange inside the HVAC case. The fixed pipe positioning and OE-style dimensions help match factory routing on supported applications, making 98621 a practical replacement during heater system repair.
Common Issues This Part Addresses
- Weak or inconsistent cabin heat
- Coolant odor inside the vehicle
- Heater core leakage into the HVAC housing
- Restricted heat output from a clogged core
- Replacement after corrosion or age-related failure
Installation Notes and Tips
Verify vehicle year, make, model, and HVAC configuration before ordering, since fitment varies by application and some listings require air conditioning or non-air-conditioning equipment. Confirm tube orientation and core dimensions against the original part before installation. Because heater core replacement often requires access through the HVAC case, inspect hoses, clamps, and related cooling system components at the same time.
Quality Assurance
Four Seasons lists this heater core as meeting or exceeding OEM specifications, supporting a replacement choice for factory-style HVAC service. The Four Seasons 98621 is engineered for the specified Ford, Lincoln, and Mercury applications and built to align with original equipment expectations.
This part fits 101 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
| Year | Make | Model | Submodel | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 1993 | Ford | Mustang | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1992 | Ford | Mustang | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1992 | Lincoln | Mark VII | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1991 | Ford | Mustang | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1991 | Lincoln | Mark VII | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1990 | Ford | Mustang | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1990 | Lincoln | Mark VII | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1989 | Ford | Mustang | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1989 | Lincoln | Mark VII | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1988 | Ford | Cougar | — | — | — | N/A | Compatible with models that do not have air conditioning.; Heater Core |
| 1988 | Ford | Mustang | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1988 | Ford | Thunderbird | — | — | — | N/A | Heater Core |
| 1988 | Ford | Thunderbird | — | — | — | N/A | Compatible with models that do not have air conditioning.; Heater Core |
| 1988 | Lincoln | Mark VII | — | — | — | N/A | Heater Core |
| 1988 | Mercury | Cougar | — | — | — | N/A | Compatible with models that do not have air conditioning.; Heater Core |
| 1987 | Ford | Cougar | — | — | — | N/A | Compatible with models that do not have air conditioning.; Heater Core |
| 1987 | Ford | Mustang | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1987 | Ford | Thunderbird | — | — | — | N/A | Heater Core |
| 1987 | Ford | Thunderbird | — | — | — | N/A | Compatible with models that do not have air conditioning.; Heater Core |
| 1987 | Lincoln | Continental | — | — | — | N/A | Compatible with models that do not have air conditioning.; Heater Core |
| 1987 | Lincoln | Mark VII | — | — | — | N/A | Heater Core |
| 1987 | Mercury | Cougar | — | — | — | N/A | Compatible with models that do not have air conditioning.; Heater Core |
| 1986 | Ford | Cougar | — | — | — | N/A | Compatible with models that do not have air conditioning.; Heater Core |
| 1986 | Ford | LTD | Base | 3.8L | V6 | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1986 | Ford | LTD | Base | 2.3L | L4 | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1986 | Ford | LTD | Brougham | 3.8L | V6 | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1986 | Ford | LTD | Brougham | 2.3L | L4 | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1986 | Ford | Mustang | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1986 | Ford | Thunderbird | — | — | — | N/A | Compatible with models that do not have air conditioning.; Heater Core |
| 1986 | Lincoln | Continental | — | — | — | N/A | Compatible with models that do not have air conditioning.; Heater Core |
| 1986 | Lincoln | Mark VII | — | — | — | N/A | Heater Core |
| 1986 | Mercury | Capri | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1986 | Mercury | Cougar | — | — | — | N/A | Compatible with models that do not have air conditioning.; Heater Core |
| 1986 | Mercury | Marquis | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1985 | Ford | Cougar | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1985 | Ford | LTD | Base | 3.8L | V6 | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1985 | Ford | LTD | Base | 2.3L | L4 | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1985 | Ford | LTD | Brougham | 3.8L | V6 | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1985 | Ford | LTD | Brougham | 2.3L | L4 | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1985 | Ford | LTD | LX Brougham | 5.0L | V8 | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1985 | Ford | Mustang | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1985 | Ford | Thunderbird | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1985 | Lincoln | Continental | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1985 | Lincoln | Mark VII | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1985 | Mercury | Capri | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1985 | Mercury | Cougar | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1985 | Mercury | Marquis | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1984 | Ford | LTD | Base | 5.0L | V8 | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1984 | Ford | LTD | Base | 3.8L | V6 | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1984 | Ford | LTD | Base | 2.3L | L4 | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1984 | Ford | LTD | Brougham | 5.0L | V8 | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1984 | Ford | LTD | Brougham | 3.8L | V6 | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1984 | Ford | LTD | Brougham | 2.3L | L4 | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1984 | Ford | LTD | Country Squire | 5.0L | V8 | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1984 | Ford | LTD | Country Squire | 5.8L | V8 | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1984 | Ford | Mustang | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1984 | Ford | Thunderbird | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1984 | Lincoln | Continental | — | — | — | N/A | Heater Core |
| 1984 | Lincoln | Mark VII | — | — | — | N/A | Heater Core |
| 1984 | Mercury | Capri | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1984 | Mercury | Cougar | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1984 | Mercury | Marquis | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1983 | Ford | Fairmont | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1983 | Ford | LTD | Base | 3.8L | V6 | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1983 | Ford | LTD | Base | 3.3L | L6 | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1983 | Ford | LTD | Base | 2.3L | L4 | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1983 | Ford | LTD | Brougham | 3.8L | V6 | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1983 | Ford | LTD | Brougham | 3.3L | L6 | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1983 | Ford | LTD | Brougham | 2.3L | L4 | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1983 | Ford | LTD | Country Squire | 5.0L | V8 | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1983 | Ford | LTD | Country Squire | 5.8L | V8 | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1983 | Ford | Mustang | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1983 | Ford | Thunderbird | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1983 | Lincoln | Continental | — | — | — | N/A | Heater Core |
| 1983 | Mercury | Capri | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1983 | Mercury | Cougar | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1983 | Mercury | Marquis | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1983 | Mercury | Zephyr | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1982 | Ford | Fairmont | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1982 | Ford | Mustang | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1982 | Ford | Thunderbird | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1982 | Lincoln | Continental | — | — | — | N/A | Heater Core |
| 1982 | Mercury | Capri | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1982 | Mercury | Cougar | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1982 | Mercury | Zephyr | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1981 | Ford | Fairmont | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1981 | Ford | Mustang | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1981 | Ford | Thunderbird | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1981 | Mercury | Capri | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1981 | Mercury | Cougar | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1981 | Mercury | Zephyr | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1980 | Ford | Fairmont | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1980 | Ford | Mustang | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1980 | Ford | Thunderbird | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1980 | Mercury | Capri | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1980 | Mercury | Cougar | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1980 | Mercury | Zephyr | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1979 | Ford | Fairmont | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1979 | Ford | Mustang | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1979 | Mercury | Capri | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1979 | Mercury | Zephyr | — | — | — | N/A | Compatible with vehicles equipped with air conditioning.; Heater Core |
| No rows match your filter. | |||||||
Directly replaces or cross-references 29 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Anchor — 8010APDI — 9010130Carlson — H2346Four Seasons — 98621Gates — 26540Global Parts Distributors LLC — 1811368Global Parts Distributors LLC — 8231307Nissens — 94621OSC — 2352Pioneer Automotive Industries — 609332TYC — 96027UAC — HT398010C90141250196279334398010554621702351702352156258546031266603126D9BZ18476AD9DZ18476AE9LY18476AFM9014XHC5HT398010ZH196