Buying task · Riding and zero-turn blade sets

Riding and zero-turn blade sets: deck first, then hole and count

How to choose riding mower blades: your exact deck, the blade count its maker lists, the center hole, set or single blade, and the blade type.

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Short answer

Identify your exact deck first (model, width and style), then order the blade or set its maker lists for that deck, by part number. Check the center hole and how many blades the listing contains. Two 48-inch decks can take three 17-1/16 in blades or two 25 in blades,[1][2] so deck width alone never tells you which blades to buy.

What this topic covers

Lawn tractors, garden tractors and residential zero-turn mowers carry two or three blades under one cutting deck. A replacement set has to match the deck's blade count, each blade's length and center hole, and the mode you mow in. This hub covers how to read a deck's record, why sets with the same deck size differ, and the guides for Toro, John Deere, Cub Cadet, Craftsman and Husqvarna decks.

The decisions, in order

1. Your exact deck. Makers separate decks by more than width. Husqvarna's accessory fit chart sorts baggers and mulch kits by deck size and by deck style: Stamped, Fabricated, Clear Cut and LRV.[3] Start with the model and serial number, then the deck the maker lists for it. John Deere's maintenance sheet for the D100 with 42-inch deck lists blade GX22151 and blade kit GY20850.[4]

2. Blades per deck, from the maker. Oregon says its 17-1/16 in 92-105 blade takes three blades for a 48-inch cut,[1] while its 25-inch 91-544 is used two per 48-inch cut.[2] Never divide the deck width by the blade count. The blades-per-deck guide explains why.

3. The center hole. Craftsman's CMXGZAM110136 set has two blades with a 5-point star center hole,[5] its CMXGZAM110108 has one blade with a 6-point star hole,[6] and Cub Cadet's 490-110-C202 set has two blades with an S-shape hole.[7] All three are 42-inch products. A hole name alone is the start of the check, not the end.

4. Set or single blade. "Set" does not always mean the whole deck. Toro's 115-5059-03 is a single 17.5-inch blade for select TimeCutter mowers built in 2011 and later.[8] Oregon sells 42TGR1HL2 as a set of two for 42-inch Toro and Exmark riding decks and 50TGR1HL3 as a set of three for 50-inch Toro and Exmark zero-turn decks.[9] Count the blades your deck needs and the blades in the box.

5. The blade type. Craftsman says the S-shaped center hole on its CMXGZAM110191 ultra high-lift set prevents the blades from being installed upside down.[10] That is a reason to stay with the hole your spindle takes, never to swap hole types. The blade types guide covers high-lift, mulching and standard blades.

Every page on riding and zero-turn blade sets

Guides

Tools

Deck sizes

Mower models

Center holes

How to choose

  1. Read the deck record for your model and serial number: width, style and blade count.
  2. Match the old blade's part number to the set's replaced-numbers list. Craftsman lists CMXGZAM110136 as a replacement for Craftsman, Husqvarna, Poulan and Poulan Pro riding mowers that use parts 532138971, 532138498, 532127843 or 127843.[5]
  3. Check the hole and the count in the listing against your deck.
  4. Check the cut direction where your deck uses left-hand and right-hand blades; Oregon's catalog filters blades by left- or right-hand cut.[9]

These approved sets name the deck or the parts they replace:

Picks that fit7 products

42-inch, 5-point star: the Oregon D-42-2G (two 21-inch Gator blades) if your old number is on Oregon's list, such as 532138971 or 127843.

More on choosing

EGO 42-inch Z6 or T6 TR4204: the AB4200D set of two, or the AB4201D high-lift bagging set. 46-inch: the Oregon 96-370 (22-7/8 in, 5-point star) if Oregon's fit guide names your mower; the 46-inch and 2-pack come from the listing. Cub Cadet and other 2015-and-later 50-inch riders and RZTs: the MTD 490-110-M155 set of three, or Oregon's 98-152 (17-1/4 in, 5/8 in 6-point star, high lift) if Oregon lists your old number, such as 490-110-M155 or 942-05052; the 3-pack is the listing's. 54-inch decks from 2014 on: the MTD 490-110-M143 set of three. On Amazon, check that 'Ships from / Sold by' shows Amazon.com or the brand.

Picks that fit4 products

Choose the Craftsman CMXGZAM110136 (two blades, 5-point star) only if your old blades are 532138971, 532138498, 532127843 or 127843.

More on choosing

Choose the Cub Cadet 490-110-C202 (two blades, S-shape hole) for a Cub Cadet lawn tractor or RZT with a 42-inch deck. Choose the Toro 79016P only for a select 34- or 50-inch TimeCutter built in 2011 or later; Toro's page gives conflicting pack counts, so confirm how many blades the listing ships. Choose Oregon's 94-063 (three 17-1/2 in standard-lift blades, 5/8 in hole) for a TimeCutter Z5000, Z5020, Z5030, Z5035, Z5040 or Z5060; Oregon lists it as replacing 79016P, but it is standard lift, not high lift. On Amazon, check that 'Ships from / Sold by' shows Amazon.com or the brand.

Key terms

Blade set, blades per deck, nominal deck width, stamped deck, fabricated deck, S-shape center hole, cut direction and serial range.

Everything in this topic

Guides

Shortlists

Tools

  • Deck size blade finderShows what makers list for decks of your width, deck by deck, so you can narrow the search without assuming every deck of that size takes the same blades.

Common questions

Are all 42-inch mower blades the same?

No. Craftsman alone sells 42-inch sets with a 5-point star, a 6-point star and an S-shape hole, with one or two blades. More in 42-inch riding mower blade sets

Which Craftsman 42-inch blade set do I need?

The one whose OEM list and hole match your old blade. CMXGZAM110136 replaces 532138971, 532138498, 532127843 or 127843 and has a 5-point star hole. More in 42-inch riding mower blade sets

What is an S-shape blade?

A blade with a curved, keyed center hole. Craftsman says the S-shape on CMXGZAM110191 means the blades cannot be installed upside down; Cub Cadet's 490-110-C202 also uses an S-shape hole. More in 42-inch riding mower blade sets

Does a 42-inch blade set include both blades?

Check the count. CMXGZAM110136 and CMXGZAM110191 contain two blades; CMXGZAM110108 contains one. More in 42-inch riding mower blade sets

How many blades does a 42, 48 or 50-inch deck have?

It depends on the deck. Oregon lists three blades for one 48-inch cut and two for another, a set of two for 42-inch Toro/Exmark riding decks and a set of three for 50-inch Toro/Exmark zero-turn decks. More in Blades per deck and blade length

Can I divide the deck width by the number of blades to get blade length?

No. Oregon's 48-inch examples use 17-1/16 in blades three per cut and 25 in blades two per cut; neither matches a simple division. More in Blades per deck and blade length

Are riding mower blades left-hand or right-hand?

Some decks use both. Oregon records an L-cut flag for each blade and filters by left- or right-hand cut; match each spindle to your deck's record. More in Blades per deck and blade length

Does a blade "set" always cover the whole deck?

No. Craftsman's 42-inch CMXGZAM110108 contains one blade, and Toro's 79016P page conflicts on its own pack size. Check the count on every listing. More in Blades per deck and blade length

Questions

How many blades does my riding mower take?

As many as its maker lists for your deck, which the width alone does not tell you. Oregon says its 92-105 blade takes three blades for a 48-inch cut, while its 25-inch 91-544 is used two per 48-inch cut. Check your model's parts list or the deck size finder.[1][2]

Are all 42-inch blade sets the same?

No. Craftsman's CMXGZAM110136 has two blades with a 5-point star hole, its CMXGZAM110108 has one blade with a 6-point star hole, and Cub Cadet's 490-110-C202 has two blades with an S-shape hole. Match the part numbers your old blades carry.[5][6][7]

Is a blade set always enough for the whole deck?

No. Toro's 115-5059-03 is a single 17.5-inch blade for select TimeCutters built in 2011 and later, so a three-blade deck needs three. Count the blades in the listing against your deck.[8]

Do I need left-hand and right-hand blades?

Some decks do. Oregon's blade catalog lets you filter by left- or right-hand cut as well as length and center-hole size. Check your deck's parts record for each spindle's blade.[9]

Sources and changes

  1. Mulching Blade, 17" (Oregon Tool) · Manufacturer · Blade 92-105 specs, cross-references, John Deere fit list · checked 17 Oct 2026
  2. Mower Blade, 25" (Oregon Tool) · Manufacturer · Low-lift blade 91-544 specs, hole-pattern notes and cross-references · checked 17 Oct 2026
  3. Fit-up chart (Husqvarna) · Manufacturer · Accessory fit by deck size, style and application · checked 17 Oct 2026
  4. Maintenance Reminder Sheet: D100 with 42" Deck (John Deere) · Manufacturer · D100 42-inch deck maintenance part numbers · checked 17 Oct 2026
  5. 42 in Bagging and Side Discharging Blade Set (CMXGZAM110136) (CRAFTSMAN) · Manufacturer · Blade count, center hole, replaced part numbers · checked 17 Oct 2026
  6. 42 in. Bagging and Side Discharging Blade Set (CRAFTSMAN) · Manufacturer · Single blade, 6-point star, OEM numbers · checked 17 Oct 2026
  7. 42" Xtreme Mulching Blade Set packaging (490-110-C202) (Cub Cadet (image hosted by The Home Depot CDN)) · Manufacturer · Package text: blade count, S-shape center hole, deck fit · checked 17 Oct 2026
  8. 17.5 Inch Replacement Blade for TimeCutter Mower (The Toro Company) · Manufacturer · Single 17.5-inch TimeCutter blade, select 2011+ TimeCutters · checked 17 Oct 2026
  9. Blades (Oregon Tool) · Manufacturer · Online blade catalogue: filters and first-page set listings · checked 17 Oct 2026
  10. 42 in Ultra High-Lift Bagging Blade Set (CRAFTSMAN) · Manufacturer · Two-blade S-shape set for 742P05177 mowers · checked 17 Oct 2026
  11. 22in Recycler Lawn Mower with SmartStow, Model 21465 Operator's Manual (The Toro Company) · Official documentation · Maintenance preparation, blade handling and grass catcher safety for model 21465, serial 400000000 and up · checked 17 Oct 2026
  12. Oregon Riding Lawnmower Gator Blade for 42 in. Deck, Fits Husqvarna and Craftsman, set of 2 (D-42-2G) · Manufacturer · Two-blade 42 in set: 21 in long, 2.5 in wide, 0.187 in thick, 5-point star, replaced part numbers, fit guide · checked 17 Oct 2026
  13. POWER+ 42" Riding Mower Replacement Blade Set (AB4200D) (EGO) · Manufacturer · Two 21 in steel blades; fit (42 in Z6, T6 TR4204) · checked 17 Oct 2026
  14. POWER+ 42" Riding Mower High-Lift Bagging Blade Set (AB4201D) (EGO) · Manufacturer · Two 21 in high-lift steel blades; fit (42 in Z6, T6 TR4204) · checked 17 Oct 2026
  15. Gator G3 Blade, 22-7/8" (96-370) (Oregon) · Manufacturer · Length, width, thickness, 5-point star, replaced numbers, fit guide; no deck size or count · checked 17 Oct 2026
  16. 2-in-1 Blade Set for 50-inch Cutting Decks (490-110-C155) (Troy-Bilt) · Manufacturer · Three 17.30 in star-hole blades, replaced numbers incl. 490-110-M155, 50 in fit list · checked 17 Oct 2026
  17. 2-in-1 Blade Set for 54-inch Cutting Decks (490-110-C143) (Troy-Bilt) · Manufacturer · Three 18.67 in star-hole blades, replaced numbers incl. 490-110-M143, 54 in fit list · checked 17 Oct 2026
  18. 17.5 Inch High Lift TimeCutter Replacement Blades (3-Pack) (The Toro Company) · Manufacturer · High-lift TimeCutter blade listing · checked 17 Oct 2026
  • : First published.
  • : Added Oregon's 98-152 blades for 50-inch MTD decks and 94-063 blades for 50-inch TimeCutters.

Next editorial review due 16 Jan 2027.