Medium
15-30 minutes
This item is available as an individual replacement part that has been sourced from the original manufacturer to be used with walk-behind lawnmowers from Toro. The pinion attaches to the transmission axle and is used to interact with the drive wheel gear to rotate the wheel. This item is available as an individual replacement part.
Pinion Gear 115-4668
OEM part for: Toro
Part Number: 115-4668
$16.42
In Stock
Order within the next 12 hours and your part ships today! 
Jump To:
Frequently Purchased Together ?
Compatibility
This Pinion Gear will fit the following 145 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
This item works with the following types of products:
- Lawn Mower Parts
Customer Part Reviews ?
Average Rating (out of 5):
Click to filter by ratings:
5 stars
4
4 stars
0
3 stars
0
2 stars
0
1 stars
0
< PREV
- 1
Easy Repair
This was easy to put on. What I really need to do is to talk to someone who can help me the problem I have. I have replaced three different parts and the problem is still there.
Guest -
June 30, 2022
Verified Purchase
Worked as expected.
Worked as expected. Nice that it's metal not plastic.
Guest -
May 6, 2022
Verified Purchase
GOOD PRICE FOR THE PART I NEEDED
RIGHT PART WORKS FINE
Guest -
August 2, 2021
Verified Purchase
Exact Replacement
Just what I needed! Once I understood why the gear and wheel teeth were wearing (bent wheel bracket) this should last for the life of the mower. NOTE: Snap Ring pliers needed to remove pinion from shaft.
Guest -
September 3, 2019
Verified Purchase
Questions & Answers ?
Our customer Service team is at the ready daily to answer your part and product questions.
Ask our Team
We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
Does this fit my product?Questions & Answers for Pinion Gear
Should pinion gear, 115-4668, be lubricated to aid in longevity of pinion and drive gear on rear wheel? If so, what is recommended? Currently in process of replacing pinions and drive wheels.
Charles
asked on 2022-04-22
Hello Charles, Thank you for the question. Use a dry lubricant only as a wet lubricant will attract dirt, grass and debris causing you more problems. I hope this helps and good luck with your repair.
eReplacementParts Team April 22, 2022
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.
Drive gear was stripped
Samuel - December 27, 2015
👍 5 of 5 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, retaining ring wrench
Parts Used
Remove the bolt holding the wheel, pull the wheel off. There is a retaining ring hold the pinion gear to the shaft, remove it. The pinion gear will pull right off. Install retaining ring, then the wheel and bolt. Finished.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Self propel on one wheel was not working. Making grinding noise.
Bob - April 17, 2017
👍 1 of 1 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Easy
Time
30-60 minutes
Tools Used
Pliers, Socket set
1. Removed hubcap from the wheel.
2. Removed bolt from the center of the wheel.
3. Removed wheel.
4. Removed c clip from the drive shaft.
5. Removed drive gear from the drive shaft.
6. Replace drive gear with the new part.
7. Installed c clip.
8. Replaced wheel.
9. Installed bolt in center of wheel.
10. Installed the hub cap on the wheel.
2. Removed bolt from the center of the wheel.
3. Removed wheel.
4. Removed c clip from the drive shaft.
5. Removed drive gear from the drive shaft.
6. Replace drive gear with the new part.
7. Installed c clip.
8. Replaced wheel.
9. Installed bolt in center of wheel.
10. Installed the hub cap on the wheel.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Pin sheared in the self propell drive for the right wheel and a mower repair shop took it apart and couldn't figure out how to make a pin and put back together with out the drive gears an made it in
David - October 2, 2023
Tool Type
Lawn Mower
Difficulty
Expert
Time
More than 2 hours
Tools Used
Screwdriver, Pliers, Power Drill, Socket set, Snap ring pliers
Parts Used
Pin sheared in the self propel drive for the right wheel and a mower repair shop took it apart and couldn't figure out how to make a pin and put back together with out the drive gears an made it into a push mower.
i made a pin and got it all working with the new drive gears from you.
Thanks
i made a pin and got it all working with the new drive gears from you.
Thanks
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Lawn mower wheel gear stripped
Michael - May 19, 2023
Tool Type
Lawn Mower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Pliers, Socket set
Removed rear drive wheels (removed axle bolts) and pinion gear (by removing snap ring)
replaced with new parts. This was an easy remove and replace old parts with new. I will now have to delay my purchase of a new mower for several more seasons.
replaced with new parts. This was an easy remove and replace old parts with new. I will now have to delay my purchase of a new mower for several more seasons.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Rear drive wheel slipping
Ralph - January 31, 2022
Tool Type
Lawn Mower
Difficulty
Easy
Time
30-60 minutes
Tools Used
Socket set, lock ring plier
1. Remove rear drive wheel.
2. Remove lock ring on pinion gear.
3. Remove pinion gear.
4. Reassemble in reverse procedures.
2. Remove lock ring on pinion gear.
3. Remove pinion gear.
4. Reassemble in reverse procedures.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Left drive wheel stopped working
Jim - September 24, 2021
Tool Type
Lawn Mower
Difficulty
Easy
Time
15-30 minutes
Tools Used
Socket set, Spring clip tool
Removed the wheel.
Removed the spring clip on gear.
Cleaned all with wd40
Reassembled.
Removed the spring clip on gear.
Cleaned all with wd40
Reassembled.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
PINION GEAR WORE OUT
Gary - August 4, 2021
Tool Type
Lawn Mower
Difficulty
Hard
Time
30-60 minutes
Tools Used
, DREMEL TOOL
Parts Used
BLOCKED UP MOWER, TOOK REAR WHEEL OFF, LOCATED PINION GEAR ON AXEL SHAFT SPRAYED PENETRATING OIL ON PINION GEAR BECAUSE IT WAS RUSTED ON AFTER YEARS OF USE. PENETING OIL DID NOT WORK. USED MY CORDLESS DREMEL TOOL WITH A ABRAISIVE BLADE TO CUT IT OFF.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Gears on back of rear drive wheeled stripped out
Andrew - May 24, 2021
Tool Type
Lawn Mower
Difficulty
Easy
Time
15-30 minutes
Tools Used
Socket set, Snapping pliers
Removed all worn parts installed all new parts that finished the job just like brand new
Did you find this story helpful?
Thanks for voting and helping fellow customers!
well drive gears were worn out
Ron - September 13, 2020
Tool Type
Lawn Mower
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Pliers, Socket set, Snap ring pliers
Removed drive wheels, removed snap ring and old gears. Reassembled with new gears and snap rings. Reattached wheels replacing with new stepped washers. Make sure that transmission shafts are free of any extraneous material. The shafts should drive the gear completely into the drive wheels.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Drive wheels, gears and belt worn. Personal pace handle torsion spring also needed replacement.
Douglas - April 13, 2020
Tool Type
Lawn Mower
Difficulty
Medium
Time
More than 2 hours
Tools Used
Screwdriver, Pliers, Socket set, Wrench Set
Replacement of the drive wheels and gears was straight forward. Replacement of the drive belt. was a bit more complex, watched a youtube video first. Replacing the torsion spring on the personal pace drive handle also required watching a youtube video.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Load More Install Stories
OEM stands for Original Equipment Manufacturer and means the part you’re buying is sourced directly from the manufacturer who made your product. At eReplacementParts, we sell only genuine OEM parts, guaranteeing the part you’re purchasing is of better design and of higher quality than aftermarket parts.
Our product descriptions are a combination of data sourced directly from the manufacturers who made your product as well as content researched and curated by our content & customer service teams. This content is edited and reviewed internally before being made public to customers.
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.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
This data is collected from customers who submitted a repair instruction after replacing this exact part. Customers can rate how easy the repair was to complete and how long it took. We aggregate this data to provide a repair rating that allows customers to quickly determine the difficulty and time needed to perform their own repair.
