Oregon 50 Inch Lawn Mower Blades, Mower Blades for 50" Deck, 17-1/2" Length, Direct Replacement for 112-9759-03, 110-6837-03 and Fits Toro Timecutter Z 5000 Series (3 Pack)

What It Is

This is a 3-pack of 17-1/2-inch Oregon lawn mower blades designed for 50-inch cutting decks, specifically as a direct replacement for OEM parts 112-9759-03 and 110-6837-03. They are intended for heavy-duty residential mowing on Toro Timecutter Z 5000 Series zero-turn mowers with 50-inch decks.

Fitment & Compatibility

Before buying, verify three things:

1. Deck size – Your mower must have a 50-inch cutting deck. Measure deck width if unsure.
2. Blade length – Each blade is 17-1/2 inches long; measure your existing blades to confirm this matches.
3. OEM cross-reference – These replace Toro parts 112-9759-03 and 110-6837-03. Check your owner’s manual or current blade part number. They fit Toro Timecutter Z 5000 Series models with 50-inch decks (e.g., 75740, 75742, 75744, 75746). They do not fit 42-inch or 54-inch decks, nor other brands unless specifically listed.

Double-check: These are aftermarket blades, not genuine Toro. They work as direct replacements but may have slight differences in thickness or material. If your mower uses a different blade hole pattern or offset, these won’t fit.

Key Things to Know

• Quality – Oregon is a reputable aftermarket brand. Blades are heat-treated and hardened, but may not last as long as OEM in high-abrasion conditions (e.g., sandy soil).
• Installation – Straightforward swap. Use a socket wrench to remove the center bolt (typically 5/8-inch or 15/16-inch). Torque to 70-90 ft-lbs. Always disconnect the spark plug first.
• Common gotcha – These blades are symmetrical (no left/right orientation), but some Timecutter models require blades with specific lift angles. Check your old blades for a curved vs. flat profile. If your OEM blades have a pronounced upward curve, ensure these match.
• Balance – Aftermarket blades may not be perfectly balanced out of the box. It’s worth checking balance with a blade balancer before installing to avoid vibration.

Should You Buy It

Buy this if you own a Toro Timecutter Z 5000 Series with a 50-inch deck and want a reliable, cost-effective replacement for OEM blades. The 3-pack is a good value for regular seasonal changes. Skip it if you need genuine Toro parts for warranty reasons or if your blades must match a specific OEM profile (e.g., mulching or bagging blades). For standard cutting on residential lawns, these work well.