Furnace Blower Belts, Pulleys & Bearings
Belt-drive blowers use a belt, pulleys, and shaft bearings to turn the squirrel cage, and they are still common in older and larger furnaces. Belts stretch and glaze, and bearings dry out — both are inexpensive parts that cause expensive-sounding noises.
42 blower belts, pulleys & bearings in stock, ready for same-day pickup at our Coquitlam warehouse or shipped worldwide. Homeowners and contractors buy at the same counter — no trade account needed.
Signs your belts & pulley may have failed
- Squealing on startup, or a rhythmic chirp while running
- Visible cracking, glazing, or fraying on the belt
- Reduced airflow with the motor running normally
- Rumbling or grinding from the blower bearings
Not sure which part you need? Call 1-778-759-9864 with your furnace model number and we will confirm it before you order.
Shop blower belts, pulleys & bearings by brand
Blower Belts, Pulleys & Bearings we stock

LENNOX 2-BOLT CAST IRON PILLOW BLOCK BEARING, 1

LENNOX V-BELT, COGGED, 5/8" WIDTH, 65" OUTER CIRCUMFERENCE, BLOWER

LENNOX BLOWER HOUSING FOR 11 1/2" X 10" BLOWER WHEEL

LENNOX BEARING, PILLOW BLOCK, BLOWER

LENNOX BEARING BRACKET

BLOWER BELT, 53" OUTSIDE

Ball Bearing with 4 Bolt Flange

Drive Belt, Multi-Cogged, AX52

Drive Belt, Multi-Cogged, AX55

Bearing Support

Mounting Frame, Bearing

Drive Belt, 47" Outside Length, 1/2" Top Width

SHAFT,BLOWER,3/4 X 36 INCH

YORK/ETC BRACKET, BEARING, A12A

38" BLOWER BELT 4L380 (A36)

39" BLOWER BELT 4L390 (A37)

40" BLOWER BELT 4L400 (A38)

41" BLOWER BELT 4L410 (A39)

42" BLOWER BELT 4L420 (A40)

44" BLOWER BELT 4L440 (A42)

45" BLOWER BELT 4L450 (A43)

46" BLOWER BELT 4L460 (A44)

48" BLOWER BELT 4L480 (A46)

73" BLOWER BELT 4L730 (A71)

BLOWER SHAFT 3/4" X 24" CUT TO REQUIRED LENGTH

BLOWER SHAFT 1" X 25". CUT TO REQUIRED LENGTH

BLOWER MOTOR PULLEY 3-1/4" X 1/2" ADJUSTABLE

BLOWER PULLEY 7" X 3/4"

BLOWER PULLEY 8" X 3/4"

BLOWER PULLEY 9" X 3/4"

BLOWER PULLEY 9" X 1"

3/4" BLOWER BEARINGS ECCENTRIC WITH SLEEVE (PER PAIR) 1-13/16" OD

1" BLOWER BEARINGS ECCENTRIC WITH SLEEVE (PER PAIR)

12" X 12" X 3/4" BLOWER FAN WHEEL
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120-962
BEARING,BALL,.75 INS W/ISOLATOR
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120-974
ISOLATOR,BEARING CUSHION 3/4
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121-926
SHAFT, W/"C" CLIP KIT
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121-927
SHAFT, W/ "C" CLIP KIT
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121-928
SHAFT, W/ "C" CLIP KIT
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122-468
BLOWER BELT (A53) 4L550
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122-469
BLOWER BELT (A54) 4L560
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122-470
BLOWER BELT (A55) 4L570
Belts & Pulleys questions
- How do I find the right belt?
- The size is printed on the belt itself — for example 4L360 or A36. If the old belt is unreadable, measure the outside circumference and the width, or give us your furnace model number.
- How tight should the belt be?
- About half to three-quarters of an inch of deflection at the midpoint under moderate thumb pressure. Over-tightening is the most common installation error and destroys the motor and blower bearings.
Need it today in Greater Vancouver?
Call ahead and we will set the part aside at the Coquitlam counter.

