Exmark Mower Blade Cross Reference by Part Number
2026-10-26 · 8 min read
Exmark mower blades are identified by part numbers stamped on the blade and listed in the parts manual, and a correct cross reference matches length, centre hole, thickness and lift type rather than the number alone. Use the Exmark number together with your deck width to find a replacement blade that actually fits.
Why an Exmark blade cross reference matters
A cross reference matters because two Exmark blades can differ in hole pattern, thickness and lift, and the wrong one will not seat on the spindle. Exmark builds commercial zero-turn mowers where decks run at high tip speed, so a mismatched blade causes vibration and an uneven cut. Matching by number alone leaves the fit to chance, which is why the number should always travel with the deck size.
How Exmark numbers its blades
Exmark uses a part-number format that encodes the blade family and revision, and reading it correctly is the first step to a correct fit. Most current Exmark blades carry numbers such as 103-xxxx-xx, while older and some listings use a 1-60xxxx style. The prefix points to a blade family, not to a single deck size, so the same family can cover several deck widths.
| Number style | Typical use | Example form | What it signals |
|---|---|---|---|
| 103-xxxx-xx | Current commercial blades | 103-6403-03 | Modern zero-turn decks |
| 1-60xxxx | Older / legacy blades | 1-603584 | Earlier Exmark decks |
| 116-xxxx | Some mulch and high-lift sets | 116-4244 | Specific deck kits |
The digits are a house code, not a specification, so a 103-xxxx and a 1-60xxxx number of the same length describe different blades — always pair the number with the deck width.
Where to find the blade number on your Exmark
The number is stamped near the centre hole on the blade's flat, but grass and rust hide it, so wire-brush the area first. If the blade is gone, the deck or model plate near the discharge chute or under the seat gives the machine model — enough to look the number up. The machine manual and the maker's parts catalogue both list the blade number by model.
Common Exmark blade numbers by deck size
The numbers below are examples of Exmark's public part-number styles, for fitment reference only. We are an independent manufacturer and not an authorised Exmark dealer, so these are not our part numbers.
- 103-6403-03 — a common 21-inch commercial high-lift blade style.
- 103-6588-03 — a mulching-style number seen on several Exmark decks.
- 116-4244 — a high-lift number for specific deck kits.
- 1-603584 — an older blade number still quoted by owners.
- 103-6402-03 — a standard-lift style across mid-size decks.
If your number is not in this short list, that is normal. Send the exact stamping and your deck width and we will cross-reference it against the model index, which lists the profiles we keep for Exmark-fit decks alongside other commercial brands.
How to cross-reference without the original number
Cross-referencing without the old number is straightforward if you record four measurements from the machine instead. Measure the old blade tip-to-tip, note the centre-hole type, check the thickness with a caliper, and say which way the blade turns. With those four facts plus the deck width, a supplier can name the right profile even when the stamping is illegible. Our blade measuring guide shows exactly what to record before you write to a supplier.
What a correct Exmark-fit replacement must match
A replacement is correct only when every mounting and cutting dimension lines up, because a close-enough blade vibrates, cuts unevenly or fails to seat. The table below is the checklist we use before quoting any Exmark-fit blade.
| Spec | Why it matters | How to confirm |
|---|---|---|
| Overall length | Seats the spindle and clears the deck | Measure tip to tip |
| Centre hole | Mounts on the mandrel | Match hole type exactly |
| Thickness | Load rating under impact | Caliper the old blade |
| Lift type | Decides cut result | Compare blade profile |
Length and hole type cause the most fitment failures, so double-check those two first. Exmark and Toro share a corporate parent, so many Exmark-fit decks also accept Toro-style 60-inch high-lift profiles — compare geometry, not brand.
Are Exmark and Toro blades the same?
Exmark and Toro blades are related but not identical — both sit under one parent company yet run different deck designs and spindle spacing. A Toro 60-inch high-lift profile can fit some Exmark decks when length, hole and thickness match, but confirm the deck width before assuming interchange. Treat them as cross-reference candidates, not guaranteed swaps, and verify the four dimensions every time.
How Exmark-fit blades are made to spec
Exmark-fit blades we supply are made to match the original specifications of the part number you send, cut from 40Mn manganese steel and hardened to a 45–50 HRC band so the edge holds through grit yet will not crack on hidden stone. The same heat-treat control that decides working life is detailed on our quality page, which is the part of production that most affects how a blade performs under real mowing load. We are an independent manufacturer; brand names are used for fitment reference only.
Can you get custom Exmark-fit blades made to a sample?
Custom Exmark-fit blades are made to a supplied sample or drawing, typically from 40Mn steel and held in the 45–50 HRC band we run across the catalogue. Share the old blade or its part number and we will confirm fitment, profile and run size. The minimum order for a custom profile is normally 300 pieces, which covers the setup and heat-treat run for a made-to-sample blade. Send your part number or a photo of the old blade to start, or browse the model index for stock shapes.
Frequently Asked Questions
Are Exmark blade numbers interchangeable across decks?
No — Exmark blade numbers interchange only when length, centre hole, thickness and lift also match, which they rarely do across different deck sizes. A number from a 52-inch deck will not suit a 60-inch deck even when the family prefix matches. Always confirm the deck width printed on the machine plate against the blade you intend to fit.
What does a 103-xxxx number mean on an Exmark blade?
A 103-xxxx-xx number marks Exmark's current commercial blade family, used across modern zero-turn decks rather than older residential machines. The digits are a house code for the blade family and revision, not a single specification, so always pair the number with the deck width. Treat it as a lookup key, not proof of fit on its own.
Can I fit a non-Exmark blade on my Exmark mower?
Yes — you can fit an independent blade as long as the length, centre hole, thickness and lift match the original, because the mower cares about the geometry, not the brand on the box. We make Exmark-fit blades made to match the original specifications and are an independent manufacturer, not an authorised dealer. Match the dimensions and the blade will seat and cut correctly.
How do I find my Exmark blade number if the stamping is worn?
Wire-brush the flat near the centre hole, then read the deck or model plate near the discharge chute or under the seat if the blade is unreadable. With the machine model and deck width you can look the blade number up in the manufacturer's parts catalogue. Send us those details and we will cross-reference them against our model index.
What is the minimum order for custom Exmark-fit blades?
The minimum order for a custom Exmark-fit blade is typically 300 pieces per profile, which covers the setup and heat-treat run for a made-to-sample blade. Share the part number or a drawing and we will confirm fitment and quote the run before any cutting begins. Send your specifications to get a quote sized to your machine.
Not sure which Exmark blade fits your deck, or want a custom profile made to a sample? Send us your part number or a photo of the old blade and we will confirm fitment and quote — or start from the model index.
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Blade part numbers linked to this article
The model pages below carry the deck size, centre hole, thickness and replacement numbers for the blades discussed above.