In stock
Part Number | SKU
558644AF

FREIGHTLINER THOMAS BUS RADIATOR FITS: 2007 & NEWER TBB-EF BUS WITH FRAME | OEM VAB1102621 1003749AS

Special Price $984.00 Regular Price $9,999.00

High quality aftermarket Freightliner radiator with frame. Replaces OEM 1102621AS & more. Built to OEM standards for long lasting performance and backed by a 2-year warranty. For same radiator without a frame see 558620.

FREIGHTLINER THOMAS BUS RADIATOR FITS: 2007 & NEWER TBB-EF BUS WITH FRAME | OEM VAB1102621 1003749AS

Keep your fleet running safely with the American Radiator Freightliner Thomas Bus radiator designed for 2007 and newer TBB-EF models. This Freightliner Thomas Bus radiator is an in-frame OEM solution featuring a plastic tank aluminum core and an integrated oil cooler to manage both coolant and oil temperatures efficiently. Engineered specifically for heavy-duty bus service, the radiator’s precise fit and rugged construction minimize downtime and simplify maintenance, enabling a straightforward direct-fit replacement without modifications. The reinforced frame and stainless crimped side rails deliver structural integrity while the high-efficiency core provides superior heat rejection during frequent stops and starts common to transit operation. Designed for longevity, it resists corrosion and vibration, delivering consistent performance in extreme temperatures. Backed by a two-year unlimited mileage warranty, this OEM radiator replacement gives fleet managers and owner-operators confidence in long-term reliability and reduced lifecycle costs. Installation is simplified by factory-aligned inlet and outlet locations and durable mounting points, making this in-frame radiator an ideal choice for school and shuttle bus applications. Choose the heavy-duty bus radiator from American Radiator to protect your engine, extend component life, and reduce costly breakdowns across every route and season.

Please confirm your OEM or Aftermarket number matches before ordering.

VAB1102621
VAB1102621
1102621AS
1040382AS
1003749AS
VAB1003749
1004040
558620
238620
238644
558620

Shipping & Returns

Famous Same-Day Shipping: In-stock items typically ship the same day when ordered by 3 PM CST Monday through Friday
30-Day Return Policy: Eligible items can be returned within 30 days (some exclusions apply)

Why Buy From American Radiator?

Trust American Radiator, your reliable source for quality cooling solutions since 2001. With roots in the industry dating back to the 1970s, our team brings decades of experience delivering high-performance radiators, charge air coolers, and DPF systems at competitive prices.

We work directly with trusted domestic and international manufacturers that supply OEM-grade components, ensuring every product meets or exceeds original equipment standards. Whether you need a heavy-duty truck radiator or a replacement for your Freightliner radiator, we’re committed to providing durable, cost-effective solutions that perform.

Have questions? Contact our experienced inside sales team at 877-719-5742 for expert guidance and fast, friendly support.

More Information
Part Number | SKU 558644AF
Make FREIGHTLINER, THOMAS BUS
Core Height 27-7/16"
Core Width 25-1/16"
Inlet 2" UPPER LEFT
Outlet 2" LOWER RIGHT
Rows 2
Oil Cooler INCLUDES COOLER ON 18" CENTERS
Depth 2-1/16"
OEM | Aftermarket Numbers VAB1102621 VAB1102621 1102621AS 1040382AS 1003749AS VAB1003749 1004040 558620 238620 238644 558620
Notes RADIATOR IN FRAME. INCLUDES HEAVY DUTY BOTTOM TANK CONSTRUCTION. FOR RADIATOR WITHOUT FRAME SEE 558620.

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