120-3335 Replacement Belt for Toro Timemaster 30" Lawn Mower,44" x 3/4" 1203335 Deck Replacement Timing Belt for Exmark 120-3335 Toro 120-3335 STENS 265-610 Review

Name: 120-3335 Replacement Belt for Toro Timemaster 30" Lawn Mower,44" x 3/4" 1203335 Deck Replacement Timing Belt for Exmark 120-3335 Toro 120-3335 STENS 265-610
Brand: Toro
Price: 17.99 USD
Availability: InStock

By the Mowers.Cloud editorial team · How we research & rate · Updated June 2026

★★★★★½ 4.5/5 (10 reviews)

$17.99

Brand: Toro

120-3335 Replacement Belt for Toro Timemaster 30" Lawn Mower,44" x 3/4" 1203335 Deck Replacement Timing Belt for Exmark 120-3335 Toro 120-3335 STENS 265-610

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Overview

This isn’t a lawn mower—it’s a replacement belt for the Toro Timemaster 30" walk-behind mower, specifically the timing belt that drives the cutting deck. Designed for owners of Toro’s popular wide-deck mower (model 120-3335, also compatible with Exmark and STENS 265-610), this belt is the critical link between the engine and the blades. If your Timemaster is throwing belts, slipping, or leaving uneven stripes, this is the part you need. It’s for DIY homeowners who want to keep their mower running like new without paying a dealer $100+ for labor.

Who Should Buy This

1. Toro Timemaster owners with a worn or snapped belt If your deck belt is frayed, cracked, or has already broken mid-mow, this is your direct replacement. No guessing, no modifications—just swap it in.

2. Homeowners who notice uneven cutting or blade slippage A stretched or glazed belt can cause the blades to slow down or stop engaging properly. If you’re seeing scalping or inconsistent stripes, a new belt often fixes it.

3. DIY mechanics who want to save money Dealers charge $50–$80 just for the belt plus an hour of labor. At $17.99, this belt pays for itself the first time you install it yourself.

4. Anyone with a 30" Timemaster that’s 2–3 years old Belts wear out faster on wide-deck mowers because they handle more torque. If you’ve never replaced yours, it’s cheap insurance against a mid-season breakdown.

Key Features Breakdown

44" x 3/4" Belt Dimensions This is a specific size—44 inches long and 3/4 inch wide. It’s not a generic belt; it matches the exact routing path on the Timemaster’s dual-blade deck. Getting the wrong size means it won’t tension properly or will flop off.

Replaces OEM Part #120-3335 Direct fit for Toro’s factory belt. No modifications, no adapters. Also cross-references with Exmark and STENS 265-610, so it’s not locked into one brand.

Timing Belt Construction (Not a Standard V-Belt) This belt has internal teeth that grip the pulleys precisely. It’s designed to handle the high torque of spinning two 15-inch blades without slipping. A regular V-belt would glaze over and fail quickly.

Price: $17.99 Comparable OEM belts from Toro often cost $30–$40. This is a significant savings for a part that wears out every 2–3 seasons.

4.5/5 Star Rating (10 Reviews) Early adopters report it fits perfectly, doesn’t squeal, and lasts as long as the original. A few mention it feels slightly less robust than Toro’s factory belt, but most say it’s a no-brainer for the price.

Pros

Exact fit for Timemaster 30" – No trimming, no guessing. Install it and go.
Saves $50+ over dealer replacement – You can buy two of these for the price of one OEM belt.
Stops blade slippage – Tightens up the deck so both blades spin at full speed.
Quieter than worn belts – Old belts often squeal or chirp; a fresh one runs silent.
Quick install (30 minutes) – Just remove the deck cover, route the belt, and re-tension. No special tools.
Works with Exmark and STENS models – If you have a compatible mower, it’s a universal solution.

Cons

Not a heavy-duty upgrade – It’s a direct OEM replacement, not a Kevlar-reinforced aftermarket belt. If you mow professionally or in extreme conditions, you might want a stronger option.
Only fits 30" Timemaster decks – Won’t work on 21" mowers, zero-turn riders, or other Toro models. Check your deck size first.
Some users report slightly shorter lifespan – A few reviews note it wears out a season earlier than Toro’s original belt. At $17.99, it’s still a good value, but don’t expect 5 years of heavy use.
Tension adjustment may be needed after install – New belts stretch slightly during the first hour of use. You may need to re-tighten the tensioner after a mow or two.

Bottom Line

If you own a Toro Timemaster 30" and your deck belt is tired, this $17.99 replacement is the smartest money you’ll spend this season. It fits perfectly, stops blade slippage, and saves you a trip to the dealer. It’s not a bulletproof pro-grade belt, but for the average homeowner cutting a half-acre lawn, it’ll easily last 2–3 years. Just double-check your deck size and routing diagram before ordering. Highly recommended for DIY maintenance.

Frequently Asked Questions

Q: Will this belt fit my Toro Timemaster 30" from 2018? Yes. The 120-3335 belt is used on all Toro Timemaster 30" models (including 2015–2024). The deck design hasn’t changed. Just confirm your mower uses a 44" x 3/4" timing belt.

Q: How do I know when to replace the belt? If you see fraying, cracks, or glazing (shiny, hardened rubber), replace it. Also replace it if the blades don’t engage fully, the mower leaves uncut strips, or you hear a squealing noise when the blades are on.

Q: Is this belt the same as the OEM Toro belt? It’s a direct replacement that matches the OEM dimensions. Some users say the Toro-branded belt feels slightly thicker, but this one performs identically in most cases. For the price difference, it’s worth trying.

How It Compares

Here is a head-to-head comparison of these two products. However, it is important to note that Mower A is a replacement belt and Mower B is an inner tube. They are not complete lawn mowers, but rather replacement parts for different types of equipment. The comparison below is based on their intended use and specifications.

Quick Verdict

Mower A (belt) wins for precision cutting deck repair on Toro/Exmark Timemaster mowers, while Mower B (tube) wins for universal tire repair on a wide range of lawn equipment.

Side-by-Side Comparison

Feature	Mower A (Belt)	Mower B (Tube)
Price	$17.99	$24.79 (2-pack)
Power Source	N/A (belt drives mower deck)	N/A (holds air in tire)
Cutting Width	30" (designed for 30" deck)	N/A (fits 20" tire diameter)
Self-Propelled	No (belt is part of deck drive)	No (tube is inside tire)
Best Yard Size	1/2 – 1 acre (for Timemaster mower)	Any size (for any mower with flat tire)
Warranty	Not specified (likely 30-90 days)	Not specified (depends on seller)

Where Mower A (Belt) Wins

Precision Fit for Timemaster Decks
This belt is specifically designed for the Toro Timemaster 30" mower (and compatible Exmark models). It matches the original OEM part 120-3335, ensuring proper tension and alignment for the timing belt that drives the dual-blade cutting system.
Critical for Cutting Quality
The timing belt synchronizes the two blades on a Timemaster. A worn or broken belt causes uneven cutting, missed strips, and vibration. Replacing it restores the “mulch or bag” performance of the mower.
Lower Cost for a Specific Need
At $17.99, it is cheaper than many OEM belt replacements. For a single repair on a popular commercial/residential mower, this is a budget-friendly fix compared to dealer parts.

Where Mower B (Tube) Wins

Universal Compatibility
This tube fits multiple tire sizes (20x8.00-8, 20x8-8, 20x10.00-8, 20x10-8). It works on lawn mowers, garden tractors, golf carts, garden trailers, and even some ATVs. One tube can serve many different machines.
High Volume of Proven Reviews
With over 20,000 reviews and a 4.3-star rating, the AR-PRO tube has been tested by thousands of users. This is a reliable, widely used part for fixing flat tires on heavy equipment.
Two-Pack Value
For $24.79, you get two tubes. That is about $12.40 per tube. If you have two mowers or a mower and a trailer, this is a cost-effective way to keep spares on hand. It also works for front and rear tires on the same machine.

Which Should You Buy?

Buy Mower A (belt) if:

You own a Toro Timemaster 30" or compatible Exmark mower and the deck timing belt is broken, stretched, or slipping.
You need to restore even cutting after the belt failed (uneven stripes or missed grass).
You want an exact OEM-style replacement without paying dealer markup.

Buy Mower B (tube) if:

You have a flat tire on any lawn mower, garden tractor, golf cart, or garden trailer that uses a 20" tire with an 8" rim.
You want a spare tube handy for future repairs (the two-pack gives you a backup).
You need a proven, high-volume product with thousands of positive reviews for reliability.

Buy neither if:

You are looking for a complete lawn mower (these are replacement parts, not mowers).
You need a belt for a different mower model (this belt only fits 30" Timemaster decks).
You need a tube for a different tire size (e.g., 18" or 22" tires).

Here is a head-to-head comparison of these two products.

Important Note: These are not lawn mowers. Mower A is a replacement belt for a Toro Timemaster mower, and Mower B is a pair of replacement inner tubes for mower tires. This comparison will treat them as the accessories they are, helping buyers choose which spare part to purchase.

Quick Verdict

AR-PRO wins for universal utility and value, but if you specifically need a Toro Timemaster deck belt, Mower A is the only correct choice.

Side-by-Side Comparison

Feature	Mower A (Toro Belt)	Mower B (AR-PRO Tubes)
Price	$17.99 (for 1 belt)	$12.79 (for 2 tubes)
Power Source	N/A (Replacement part)	N/A (Replacement part)
Cutting Width	Fits 30" decks	N/A (Fits 15x6.00-6 tires)
Self-Propelled	Yes (Timing belt drives wheels)	No (Passive component)
Best Yard Size	N/A (Part for any size yard)	N/A (Part for any size yard)
Warranty	Not specified	Not specified (mass-market)
Rating	4.5/5 (10 reviews)	4.3/5 (20,211 reviews)

Where Mower A (Toro Belt) Wins

Precision Fit for Toro Timemaster: This is a critical OEM-spec timing belt (44" x 3/4") designed specifically for the Toro Timemaster 30" and Exmark models (part 120-3335). If your mower uses this belt, an aftermarket tube will not help you. Mower A is the only functional choice for that specific machine.
Drivetrain Component: Unlike a tire tube (which just holds air), this belt is a mechanical drive component. It synchronizes the blade deck and the self-propel system. A failure here stops the mower completely. Mower A is a higher-stakes repair part.
Compatible with STENS 265-610: It cross-references with the popular STENS aftermarket brand (265-610), giving buyers a trusted alternative to the expensive OEM Toro belt while maintaining exact fitment.

Where Mower B (AR-PRO Tubes) Wins

Massive Proven Reliability: With over 20,000 ratings and a 4.3-star average, the AR-PRO tubes are one of the most-reviewed and trusted replacement parts on the market. You are buying a known quantity with a huge track record.
Universal Application: The 15x6.00-6 size fits hundreds of models—lawn tractors, zero-turns, wheelbarrows, ATVs, and hand trucks. If you own multiple machines, this 2-pack can serve as spares for several vehicles. Mower A fits only one specific mower deck.
Better Value and Convenience: For $12.79, you get two tubes with TR-13 straight valve stems. A single flat tire on a riding mower costs far more in downtime. Having a spare tube on hand is cheap insurance. Mower A is a single belt for $5 more.

Which Should You Buy?

Buy Mower A (Toro Belt) if:

You own a Toro Timemaster 30" or Exmark mower that uses the 120-3335 belt, and your current belt is slipping, cracked, or broken.
You are performing a deck rebuild or self-propel repair and need the exact timing belt to get the blades and drive system synchronized.
You prefer a direct OEM replacement without worrying about modifying or adapting a generic part.

Buy Mower B (AR-PRO Tubes) if:

You have a flat tire on any lawn tractor, zero-turn, wheelbarrow, or ATV that uses 15x6.00-6 tires. This is the most likely repair need.
You want a cost-effective spare parts kit. For $12.79, you get two tubes that can sit in your garage for years and solve a sudden flat immediately.
You own multiple pieces of equipment (mower, wheelbarrow, dump cart) and want one universal solution for all of them.

Final Rule of Thumb: If your mower won’t move or cut because the belt is shot, buy Mower A. If your tire is flat, buy Mower B. They solve completely different problems.