Ariens Mower Blade Replacement by Part Number
2026-10-24 · 8 min read
Ariens mower blades are identified by a stamped part number, and the correct replacement must match that number along with your deck width and centre-hole type. Match the number on the old blade to order a replacement that seats and cuts correctly — a close-enough blade will vibrate, cut unevenly or fail to fit the mandrel.
How do I identify my Ariens mower blade?
Identify your Ariens blade by the number stamped near its centre hole, because that number — not the brand on the box — decides whether a replacement seats and cuts correctly. Cross-check the stamping against your deck width and the centre-hole type before ordering, and you avoid the most common fitment failures. Our guide to matching a blade by OEM number walks through reading that stamping step by step.
Where is the Ariens blade part number?
The Ariens blade part number is stamped on the flat of the blade near the centre hole, but grass and rust usually hide it, so wire-brush the area first. If the old blade is gone, the deck or model plate under the seat or near the discharge chute gives the machine model, which is enough to look the number up. The owner's manual and Ariens parts diagrams both list the blade number by model.
Which Ariens models share blade numbers?
Several Ariens zero-turn and riding decks carry the same blade profile, so one part number can cover the Ikon XD, Ikon XL and similar 52-inch decks. The table below lists real Ariens-fit blade numbers we keep in stock so you can recognise the format stamped on your own blade.
| Ariens deck | Blade number | Type | Fits |
|---|---|---|---|
| Ikon XD / Ikon XL 52 in | 603995 | Mulching | Ariens Ikon series 52" zero-turn |
| Ikon / Gravely 52–54 in | — | Mulching | Ariens & Gravely 52–54" decks |
| 42 in rider / tractor | 422719 | Mulching | Ariens, Craftsman, Poulan, Murray 42" |
These cross to several brands because the decks share tooling, so confirm deck width and centre hole before treating any cross as exact.
What must a correct Ariens-fit blade match?
A replacement is correct only when every mounting and cutting dimension lines up, because a blade that is close enough still vibrates, cuts unevenly or fails to seat. The table below is the checklist we use before quoting any Ariens-fit blade, and it applies to both stock and made-to-sample profiles.
| 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 before anything else.
Are Ariens mower and snow blower blades the same?
No — Ariens mower blades and snow blower augers are completely different parts, because the mower line and the snow equipment line use separate tooling and mounting. Ariens is known for both snow blowers and zero-turn mowers, but a snow auger blade is not a lawn mower blade and should never be fitted to a mower deck. This article covers the lawn-mower blade line only; match the mower's stamped number, not the snow machine's.
Are aftermarket Ariens blades safe to fit?
Yes — an independent blade is safe 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 are an independent manufacturer and not an authorised Ariens dealer; brand names appear here only for fitment reference. Match the dimensions and the blade will seat and cut correctly, the same way the original did.
How are Ariens-fit blades made to spec?
Ariens-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. That hardness holds the edge through grit yet will not crack on a hidden stone, which is the balance that decides working life. The same heat-treat control that protects the edge is detailed on our quality page, where the production steps that affect field performance are explained.
Can I order custom Ariens-fit blades?
Yes — custom Ariens-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 confirm fitment, profile and run size before cutting. 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
What is the part number for an Ariens Ikon XD 52 blade?
The Ariens Ikon XD 52-inch deck uses blade number 603995, a mulching profile shared across the Ikon series 52-inch zero-turn decks. Confirm the deck width printed on the machine plate, because a different deck size uses a different number. Send us the stamping if yours is not 603995 and we will cross-reference it.
Where do I find the blade number on an Ariens mower?
The blade number is stamped near the centre hole on the flat of the blade, and also on the deck or model plate under the seat or near the discharge chute. Wire-brush the area around the centre hole first, because grass and rust usually hide the stamping. With the machine model and deck width you can look the number up in Ariens parts diagrams.
Can I fit a non-Ariens blade on my Ariens 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 Ariens-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.
Are Ariens and Gravely blade numbers the same?
Often the same, because Ariens and Gravely share deck tooling on several 52–54-inch models, so a Gravely 04771200-style deck and an Ariens 52-inch deck can carry a matching profile. A number match still requires the same deck width and centre-hole type, so confirm those two before ordering. Send us the details and we will cross-reference them against our model index.
What is the minimum order for custom Ariens-fit blades?
The minimum order for a custom Ariens-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 confirm fitment and quote the run before any cutting begins. Send your specifications to get a quote sized to your machine.
Not sure which Ariens 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.
More on this: Gravely Mower Blades: Deck Size & Fitment Guide · Ferris Mower Blades: Deck Size & Fitment Guide
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.