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Four SeasonsPart #: 98533

Four Seasons 98533 HVAC Heater Core

Name: Four Seasons 98533 HVAC Heater Core
Brand: Four Seasons
SKU: BBRN-98533
Price: 69.89 USD
Availability: InStock

Heater Core

⚙️ 57 vehicles fit this part

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Select your vehicle to confirm fitment

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✅OE Direct Replacement — Bolt-on fit, no modifications needed

📦Heater Core

🚗Fitment: Buick, Oldsmobile, and Pontiac, 98, Bonneville, Catalina, Delta 88, Grand Prix, LeSabre, and Starfire

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Reliable Heater Core Replacement for Buick, Oldsmobile, and Pontiac

The Four Seasons Heater Core 98533 is designed to restore efficient heating performance in select Buick, Oldsmobile, and Pontiac vehicles. Engineered with durable aluminum construction, this heater core ensures consistent heat transfer and long-lasting operation.

Core dimensions: 9-1/8 inches length, 6 inches width, 1-7/8 inches thickness
Constructed from corrosion-resistant aluminum material
Core depth of 1.875 inches and height of 9.125 inches for precise fitment
Tube sizes: 0.625 inch (15.875 mm) and 0.750 inch (19.050 mm) for proper coolant flow
Meets or exceeds OEM specifications for reliable performance

Four Seasons Heater Core Product Line Overview

The Four Seasons Heater Core line focuses on delivering quality HVAC components that meet or exceed original equipment manufacturer standards. The 98533 heater core is part of this line, offering a direct replacement solution with aluminum construction for improved heat dissipation and durability. This product line is engineered to maintain optimal cabin heating and comfort in compatible vehicles.

Detailed Product Description

This HVAC heater core features an aluminum core designed to efficiently transfer heat from the engine coolant to the vehicle’s interior. With precise core dimensions of 9.125 inches in height, 6 inches in width, and 1.875 inches in depth, it fits select models from Buick, Oldsmobile, and Pontiac, including the 98, Bonneville, Catalina, Delta 88, Grand Prix, LeSabre, and Starfire. The heater core’s tubes measure 0.625 inch and 0.750 inch in diameter, ensuring proper coolant circulation. The part number 98533 identifies this specific heater core within the Four Seasons product range, providing a reliable replacement that meets OEM standards.

Common Applications and Issues Addressed

Restores heating system functionality in Buick, Oldsmobile, and Pontiac vehicles
Resolves insufficient cabin heat due to clogged or leaking heater cores
Eliminates coolant leaks inside the passenger compartment
Prevents engine overheating caused by heater core failure
Improves overall HVAC system efficiency and comfort

Installation Notes and Tips

When installing the Four Seasons Heater Core 98533, ensure compatibility with your specific vehicle make and model. Proper handling of the aluminum core is important to avoid damage during installation. Verify that the tube connections match the original specifications (0.625 inch and 0.750 inch diameters) for secure coolant flow. It is recommended to flush the cooling system before installation to prevent contamination and extend the heater core’s service life.

Quality Assurance and Warranty

The Four Seasons Heater Core 98533 is manufactured to meet or exceed OEM quality standards, providing dependable performance and durability. This part is backed by Four Seasons’ quality assurance protocols, ensuring it delivers consistent heating performance for Buick, Oldsmobile, and Pontiac vehicles. Please refer to Four Seasons’ warranty terms for specific coverage details.

Brand	Four Seasons
Part Number	98533
Position	Heater Core
Length	9-1/8
Thickness	1-7/8
Width	6
Core Material	Aluminum
Adjustable Pipe Positioning	No
Core Depth IN	1.875
Core Height IN	9.125
Core Width IN	6.000
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

This part fits 57 vehicles. Search below:

Year	Make	Model	Submodel	Body Type	Liters	Cylinders	Position	Notes
1969	Buick	LeSabre		Sedan	5.7L	V8	N/A	Compatible with models that do not have air conditioning.; Heater Core
1969	Buick	LeSabre		Coupe	5.7L	V8	N/A	Compatible with models that do not have air conditioning.; Heater Core
1969	Buick	LeSabre		Convertible	5.7L	V8	N/A	Compatible with models that do not have air conditioning.; Heater Core
1969	Buick	LeSabre		Hardtop	5.7L	V8	N/A	Compatible with models that do not have air conditioning.; Heater Core
1969	Pontiac	Bonneville					N/A	Compatible with models that do not have air conditioning.; Heater Core
1969	Pontiac	Catalina					N/A	Compatible with models that do not have air conditioning.; Heater Core
1968	Buick	LeSabre		Sedan	5.7L	V8	N/A	Compatible with models that do not have air conditioning.; Heater Core
1968	Buick	LeSabre		Wagon	5.7L	V8	N/A	Compatible with models that do not have air conditioning.; Heater Core
1968	Buick	LeSabre		Coupe	5.7L	V8	N/A	Compatible with models that do not have air conditioning.; Heater Core
1968	Buick	LeSabre		Convertible	5.7L	V8	N/A	Compatible with models that do not have air conditioning.; Heater Core
1968	Buick	LeSabre		Hardtop	5.7L	V8	N/A	Compatible with models that do not have air conditioning.; Heater Core
1968	Oldsmobile	98					N/A	Compatible with models that do not have air conditioning.; Heater Core
1968	Oldsmobile	Delta 88					N/A	Compatible with models that do not have air conditioning.; Heater Core
1968	Pontiac	Bonneville	Base				N/A	Compatible with models that do not have air conditioning.; Heater Core
1968	Pontiac	Catalina	Base				N/A	Compatible with models that do not have air conditioning.; Heater Core
1968	Pontiac	Catalina	Ventura				N/A	Compatible with models that do not have air conditioning.; Heater Core
1968	Pontiac	Grand Prix					N/A	Compatible with models that do not have air conditioning.; Heater Core
1967	Buick	LeSabre		Wagon	5.6L	V8	N/A	Compatible with models that do not have air conditioning.; Heater Core
1967	Buick	LeSabre		Sedan	5.6L	V8	N/A	Compatible with models that do not have air conditioning.; Heater Core
1967	Buick	LeSabre		Coupe	5.6L	V8	N/A	Compatible with models that do not have air conditioning.; Heater Core
1967	Buick	LeSabre		Convertible	5.6L	V8	N/A	Compatible with models that do not have air conditioning.; Heater Core
1967	Buick	LeSabre		Hardtop	5.6L	V8	N/A	Compatible with models that do not have air conditioning.; Heater Core
1967	Oldsmobile	98					N/A	Compatible with models that do not have air conditioning.; Heater Core
1967	Oldsmobile	Delta 88					N/A	Compatible with models that do not have air conditioning.; Heater Core
1967	Pontiac	Bonneville	Base				N/A	Compatible with models that do not have air conditioning.; Heater Core
1967	Pontiac	Catalina					N/A	Compatible with models that do not have air conditioning.; Heater Core
1967	Pontiac	Catalina	Base				N/A	Compatible with models that do not have air conditioning.; Heater Core
1967	Pontiac	Catalina	2+2				N/A	Compatible with models that do not have air conditioning.; Heater Core
1967	Pontiac	Catalina	Ventura				N/A	Compatible with models that do not have air conditioning.; Heater Core
1967	Pontiac	Grand Prix					N/A	Compatible with models that do not have air conditioning.; Heater Core
1966	Buick	LeSabre		Wagon	5.6L	V8	N/A	Compatible with models that do not have air conditioning.; Heater Core
1966	Buick	LeSabre		Sedan	5.6L	V8	N/A	Compatible with models that do not have air conditioning.; Heater Core
1966	Buick	LeSabre		Coupe	5.6L	V8	N/A	Compatible with models that do not have air conditioning.; Heater Core
1966	Buick	LeSabre		Convertible	5.6L	V8	N/A	Compatible with models that do not have air conditioning.; Heater Core
1966	Buick	LeSabre		Hardtop	5.6L	V8	N/A	Compatible with models that do not have air conditioning.; Heater Core
1966	Oldsmobile	98					N/A	Compatible with models that do not have air conditioning.; Heater Core
1966	Oldsmobile	Delta 88					N/A	Compatible with models that do not have air conditioning.; Heater Core
1966	Pontiac	Bonneville	Base				N/A	Compatible with models that do not have air conditioning.; Heater Core
1966	Pontiac	Catalina	Base				N/A	Compatible with models that do not have air conditioning.; Heater Core
1966	Pontiac	Catalina	2+2				N/A	Compatible with models that do not have air conditioning.; Heater Core
1966	Pontiac	Catalina	Ventura				N/A	Compatible with models that do not have air conditioning.; Heater Core
1966	Pontiac	Grand Prix					N/A	Compatible with models that do not have air conditioning.; Heater Core
1965	Buick	LeSabre		Wagon	4.9L	V8	N/A	Compatible with models that do not have air conditioning.; Heater Core
1965	Buick	LeSabre		Sedan	4.9L	V8	N/A	Compatible with models that do not have air conditioning.; Heater Core
1965	Buick	LeSabre		Coupe	4.9L	V8	N/A	Compatible with models that do not have air conditioning.; Heater Core
1965	Buick	LeSabre		Convertible	4.9L	V8	N/A	Compatible with models that do not have air conditioning.; Heater Core
1965	Buick	LeSabre		Hardtop	4.9L	V8	N/A	Compatible with models that do not have air conditioning.; Heater Core
1965	Oldsmobile	98					N/A	Compatible with models that do not have air conditioning.; Heater Core
1965	Oldsmobile	Delta 88					N/A	Compatible with models that do not have air conditioning.; Heater Core
1965	Pontiac	Bonneville	Base				N/A	Compatible with models that do not have air conditioning.; Heater Core
1965	Pontiac	Catalina	Base				N/A	Compatible with models that do not have air conditioning.; Heater Core
1965	Pontiac	Catalina	2+2				N/A	Compatible with models that do not have air conditioning.; Heater Core
1965	Pontiac	Catalina	Ventura				N/A	Compatible with models that do not have air conditioning.; Heater Core
1965	Pontiac	Grand Prix					N/A	Compatible with models that do not have air conditioning.; Heater Core
1964	Oldsmobile	98					N/A	Compatible with models that do not have air conditioning.; Heater Core
1964	Oldsmobile	Starfire					N/A	Compatible with models that do not have air conditioning.; Heater Core
1964	Pontiac	Grand Prix					N/A	Compatible with models that do not have air conditioning.; Heater Core

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

15701718120722148250114279104300481230048133004815300485430218253157017399041399043399044399051399059554533660355970214470214870912390103269014490419041090599453398533GM9041H2266HT399041HT399044HT399051HT399059ZH114

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.