Black drive belt on white background
Black drive belt on white background

A41/4L430 HVAC V-Belt — Replaces Lennox 25W63, Greenheck 345212

Sale price
$8.41
Regular price
$10.99
You save
$2.58 (23%)

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BELT SLIPPING, SQUEALING OR WORN?

A41/4L430 HVAC V-Belt — Restores Blower Speed & Airflow

43-inch outside-length, 1/2-inch wrapped drive belt with verified OEM and manufacturer cross-reference data.

A41 / 4L43043" Outside Length1/2" Top Width40° Profile
Verified Equipment Fitment: Verified Lennox model fitment: ZGB048S401, ZGB060S401 and ZCB036S401. Their replacement-parts records list Lennox 25W63 as the A41, 43-inch blower belt.

Verified Cross-Reference Information

Industry NumbersA41, 4L430
Lennox Numbers25W63, 100245-18
Greenheck345212 (A41), 345070 (4L430)
GatesA41; PoweRated 6843 / 4L430K

Equivalent vs. Alternative Belts

Dimensional FHP EquivalentGates 6843 / 4L430K
Cogged Performance AlternativeAX41 — raw-edge cogged construction; not identical to a wrapped A41/4L430

Important: A belt can share the same nominal size while using a different cover, cord, compound or cogged construction. Match the original duty requirement as well as the section and length.

Size & Application Data

Outside Length43" / 1092 mm
Top Width1/2" / 12.7 mm
Nominal HeightApproximately 5/16" to 11/32", depending on manufacturer specification
Typical UsesHVAC blowers, rooftop units, ventilation fans, air handlers, pumps and industrial drives

Common Problems This Belt May Correct

  • Startup squeal, chirp or belt slip
  • Weak airflow or a blower running below normal speed
  • Black belt dust around the sheaves
  • A cracked, glazed, stretched, frayed or hardened belt

Check Before Ordering

  • Read the complete number printed on the old belt whenever possible.
  • Confirm the 1/2-inch A/4L profile and 43-inch outside-length designation.
  • Inspect both sheaves for worn, widened, polished or damaged grooves.
  • Check shaft alignment, bearing drag and the tensioning system.
Pro Tip: A new belt will not permanently stop noise caused by worn sheaves, misalignment or failing bearings. Correct the drive problem first, then set final tension to the equipment specification.

Installation Notes

  1. Disconnect and lock out electrical power.
  2. Release belt tension according to the service instructions.
  3. Do not pry the belt over a pulley; create enough slack.
  4. Clean and align the sheaves, then set specified tension.
  5. Rotate by hand, reinstall guards, restore power and test.

Frequently Asked Questions

Are A41 and 4L430 interchangeable?
They are commonly paired as the same nominal 1/2-inch, 43-inch size. Construction and duty rating can still differ by product line.

Can AX41 replace this belt?
AX41 is a related cogged performance alternative, not identical wrapped construction. Verify the equipment permits the change.

✓ Model-Specific Repair Pages

Frigidaire 1 Dishwasher Parts & Repair Guide

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Kitchener, Ontario N2E 1W8
Phone
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What Customers Say

4.70 ★ (288)
Verified

All brand names are the property of their respective owners and are used for compatibility reference only.

Exact and OEM references: A41, 4L430, Lennox 25W63, Lennox 100245-18, Greenheck 345212, Greenheck 345070, Gates A41. Dimensional FHP equivalent: Gates 6843 / 4L430K. Performance alternative: AX41 raw-edge cogged; not identical construction.

Verified models: ZGB048S401, ZGB060S401, ZCB036S401. For other equipment, match by A41/4L430 marking, 1/2-inch width and 43-inch outside length.