Easy
Less than 15 minutes
This is a genuine Troy-Bilt replacement part sourced from the original manufacturer for use with walk behind mulching lawnmowers. The special mulching blade is used to stir up grass clipping within the mower deck to cut the clippings into smaller pieces. This mulcher blade is available as an individual replacement part, please see model diagram for associative parts.
Blade-21mulching 1764381
OEM part for: Troy-Bilt
Part Number: 1764381
$45.75
In Stock
Ships within 1 business day 
Compatibility
This part will fit the following 32 machines
Troy-Bilt
34313 (S/N 343130100101-343130299999) Mulching Mower View Diagrams & Manuals
34320 (S/N 343200100101-343201199999) Mulching Mower View Diagrams & Manuals
34320C (CARB)(S/N 34320C0100101-34320C1199999) Mulching Mower View Diagrams & Manuals
34321 (S/N 343210100101-343211199999) Mulching Mower View Diagrams & Manuals
34020 (S/N 340200100101-3402003999999) Mulching Mower View Diagrams & Manuals
34321C (CARB)(S/N 34321C0100101-343211199999) Mulching Mower View Diagrams & Manuals
34021 4HP-21" Single (ADJ.) Speed S.P. Mower View Diagrams & Manuals
34322 (S/N 343220100101-343211199999) Mulching Mower View Diagrams & Manuals
34022 5HP-21" Var. Speed S.P. View Diagrams & Manuals
34023 5HP-21" Var. Speed S.P. View Diagrams & Manuals
34024 (S/N 3402401XXXXX) Mulching Mower View Diagrams & Manuals
34311 (S/N 3431100100101-343110499999) Mulching Mower View Diagrams & Manuals
34322C (CARB)(S/N 34322C0100101-34322C11199999) Mulching Mower View Diagrams & Manuals
34323 (S/N 343230100101-343230199999) Mulching Mower View Diagrams & Manuals
34323C (CARB)(S/N 34323C0100101-343441199999) Mulching Mower View Diagrams & Manuals
34344 (S/N 343441100101-343441199999) Mulching Mower View Diagrams & Manuals
34345 6HP-21" Variable Speed S.P. Mower View Diagrams & Manuals
34346 (S/N 343461100101-343461199999) Mulching Mower View Diagrams & Manuals
34020 (340200100101-3402003999999) 4hp-21-Inch Push View Diagrams & Manuals
34313 (343130100101-343130299999) 5.5hp-21 Bbc World Cup View Diagrams & Manuals
34320 (343200100101-343201199999) 4hp-21-Inch Push Mower View Diagrams & Manuals
34320C (34320C0100101-34320C1199999) 4hp-21-Inch Push (Carb) View Diagrams & Manuals
34321C (34321C0100101-343211199999) 4hp-21-Inch Single Speed S.P. (Carb) View Diagrams & Manuals
34344 (343441100101-343441199999) 5hp-21-Inch Push Mower View Diagrams & Manuals
34024 (3402401XXXXX) 5.5hp-21-Inch Bbc Var. S.P View Diagrams & Manuals
34311 (343110100101-343110499999) 5.5hp-21-Inch Bbc Var. S.P View Diagrams & Manuals
34321 (343210100101-343211199999) 4hp-21-Inch Single Speed S.P. Mower View Diagrams & Manuals
34322 (343220100101-343211199999) 5hp-21-Inch Variable Speed S.P. Mower View Diagrams & Manuals
34322C (34322C0100101-34322C11199999) 5hp-21-Inch Variable Spped S.P. (Carb) View Diagrams & Manuals
34323 (343230100101-343230199999) 5hp-21-Inch Elec. Start Var. S.P. View Diagrams & Manuals
34323C (34323C0100101-343441199999) 5hp-21-Inch Elec. Start Var. S.P. (Carb) View Diagrams & Manuals
34346 (343461100101-343461199999) 6hp-21-Inch Elec. Start Var. Speed S.P. View Diagrams & Manuals
Show More Compatible Models
This item works with the following types of products:
- Lawn Mower Parts
- Cultivator Parts
This part replaces obsolete part #: 1768306
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Fits like it is advertised.🤗
Ordered my new blade from here and was able to track it from the minute it was mailed to me.Very happy with the whole process and will most likely be ordering other things when needed.Thanks for making this easy on me.
Guest -
June 22, 2023
Verified Purchase
glad you had it in stock
This mower is from the 1990's and still works well...but it needed a new blade. Grateful that you had it in stock. Looks good, shipped quick, and will keep me mowing for another couple years. Thanks!
Guest -
October 1, 2021
Verified Purchase
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t days ago
Verified Purchase
eReplacementParts Team
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Customer Repair Instructions ?
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
Blade out of balance blade
Frank - May 5, 2017
👍 2 of 2 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Socket set, Wrench Set
Parts Used
Remove the blade bolt and hex nuts, then the blade
Install the blade in reverse order
Install the blade in reverse order
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Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
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