Finding the correct belt size for your Briggs & Stratton equipment is essential for maintaining performance and avoiding costly repairs. In this post, we’ll explore how to identify the right belt for your machine, provide belt size chart for common models, and share tips for sourcing genuine replacement belts.
Briggs and Stratton Belt Size Chart
Riding Mowers
| Model | Belt Type | Length (inches) | Width (inches) | OEM Part Number |
|---|---|---|---|---|
| 42R707-2238-G1 | Deck Belt | 95.5 | 0.5 | 37X88MA |
| 31C707-0154-E1 | Drive Belt | 91.0 | 0.5 | 37X61MA |
| 33R877-0002-G1 | Deck Belt | 96.3 | 0.5 | 37X89MA |
| 44N877-0002-G1 | Drive Belt | 92.0 | 0.5 | 37X82MA |
| 310000 Series | Deck Belt | 97.0 | 0.5 | 37X105MA |
| 331877-1371-G5 | Drive Belt | 90.0 | 0.5 | 37X84MA |
Related Cub Cadet Belt Size Chart(For All Models)
Push Mowers
| Model | Belt Type | Length (inches) | Width (inches) | OEM Part Number |
|---|---|---|---|---|
| 09P702-0145-F1 | Drive Belt | 35.0 | 0.38 | 38X30MA |
| 10T802-0547-B1 | Blade Belt | 38.0 | 0.5 | 38X32MA |
| 12H802-1537-B1 | Drive Belt | 36.2 | 0.5 | 38X33MA |
| 122T02-0131-B1 | Drive Belt | 37.0 | 0.5 | 38X38MA |
| 128M02-0013-F1 | Blade Belt | 40.0 | 0.5 | 38X39MA |
Zero Turn Mowers
| Model | Belt Type | Length (inches) | Width (inches) | OEM Part Number |
|---|---|---|---|---|
| 49R977-0004-G1 | Deck Belt | 114.5 | 0.625 | 38X61MA |
| 44S877-0001-G1 | Drive Belt | 96.0 | 0.5 | 38X59MA |
| 44Q777-3137-B1 | Deck Belt | 116.0 | 0.625 | 38X64MA |
| 49T877-0002-G1 | Drive Belt | 98.5 | 0.5 | 38X70MA |
Related Gravely Belt Size Chart(For All Models)
Lawn Tractors
| Model | Belt Type | Length (inches) | Width (inches) | OEM Part Number |
|---|---|---|---|---|
| 33S877-0019-G1 | Drive Belt | 89.0 | 0.5 | 37X91MA |
| 331777-0016-G1 | Deck Belt | 104.0 | 0.5 | 37X95MA |
| 33R777-0024-G1 | Drive Belt | 90.0 | 0.5 | 37X93MA |
| 31R977-0054-G1 | Deck Belt | 102.5 | 0.5 | 37X92MA |
Garden Tractors
| Model | Belt Type | Length (inches) | Width (inches) | OEM Part Number |
|---|---|---|---|---|
| 44R877-0023-G1 | Drive Belt | 100.0 | 0.625 | 37X100MA |
| 49M977-1035-G1 | Deck Belt | 106.0 | 0.625 | 37X106MA |
| 40H777-0242-G1 | Drive Belt | 99.5 | 0.5 | 37X102MA |
Related Husqvarna Belt Size Chart(For All Models)
Commercial Mowers
| Model | Belt Type | Length (inches) | Width (inches) | OEM Part Number |
|---|---|---|---|---|
| Vanguard 810 EFI | Deck Belt | 112.5 | 0.625 | 38X75MA |
| Vanguard 896cc | Drive Belt | 108.0 | 0.5 | 38X78MA |
| Vanguard 37 HP | Deck Belt | 115.0 | 0.625 | 38X80MA |
How to Find the Correct Belt Size
To find the right belt for your Briggs & Stratton equipment, follow these steps:
- Locate Your Model Number: Check your equipment or engine for the model, type, and code numbers. These are usually found on a sticker or plate on the machine. For engines, the format is typically XXXXXX-XXXX-XX (e.g., 1697157 for a snowblower). For equipment, you may need the brand (e.g., Murray, Snapper) and model number.
- Use the Briggs & Stratton Parts Lookup Tool: Visit the official Briggs & Stratton website (www.briggsandstratton.com) or their online store (shop.briggsandstratton.com). Enter your model number to access parts diagrams and identify the correct belt part number.
- Check the Manual: Your equipment’s operator manual or repair manual often lists part numbers and specifications for belts. You can download manuals from Briggs & Stratton’s website by entering your model number.
- Consult a Dealer or Repair Shop: If you’re unsure, a local Briggs & Stratton dealer or repair shop can help identify the correct belt based on your equipment’s model and serial number.
Related Briggs & Stratton Valve Clearance Chart(For All Models)
Tips for Replacing Briggs & Stratton Belts
- Use Genuine Parts: Briggs & Stratton genuine belts (available at shop.briggsandstratton.com) are designed to OEM standards, ensuring proper fit and compliance with EPA regulations. For example, the 585416MA auger drive belt for Murray snowblowers is 35″ long, 1/4″ wide, and 1/2″ thick.
- Check for Wear: Inspect belts for cracks, fraying, or stretching. A worn belt can cause slippage or failure, as seen in cases like the Briggs & Stratton S1024MDS snowblower, where the auger stops under load due to a faulty belt.
- Measure Manually: If you can’t find the part number, measure the old belt’s length, width, and thickness. Use a flexible tape measure for the outside circumference and calipers for width and thickness.
Why Belt Size Matters
Belts in Briggs & Stratton equipment, such as those used in Murray, Simplicity, or Snapper machines, come in various sizes and types (e.g., V-belts, auger drive belts, spindle belts).
Using the wrong belt size can lead to slippage, reduced efficiency, or even damage to your equipment. Belt sizes are typically specified by part number, length, width, and sometimes thickness or material.
Since Briggs & Stratton doesn’t publish a universal belt size chart for all models, you’ll often need to rely on model-specific manuals, parts lookup tools, or cross-reference charts
