Easy
Less than 15 minutes
Genuine Manufacturer Sourced replacement part used on a some Porter Cable Jointers. This part is made out of Plastic and it is Sold Individually. This part uses Two (2) Screws to attach it to the unit, they are Sold Separately.
Left Pivot 903370
OEM part for: Porter Cable
Part Number: 903370
$8.60
In Stock
Ships within 1 business day 
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Frequently Purchased Together ?
Compatibility
This part will fit the following 2 machines
Porter Cable
557 Type 3 Plate Joiner Kit View Diagrams & Manuals
557 Type 4 Plate Joiner Kit View Diagrams & Manuals
This item works with the following types of products:
- Plate Joiner Parts
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Receive quality parts quickly
Always receive the parts that I need fast and easy. Just in time to use on a job. Thanks again
Leon Langford -
July 19, 2023
Verified Purchase
great resource
I’m very happy with the parts for my biscuit joiner. They arrived quickly, were priced fairly and fit perfectly. I am happy to have found your company.
Richard -
October 6, 2022
Verified Purchase
Hard to find Original Part
I looked around the web but couldn't find this older part. eReplacement could get it, thank you. Glad I didn't need it in a hurry because it took quite some time to get it to me, but I don't fault eReplacement - these are just tough times to get anything these days. But get it they did, and mailing it was a clear and notified process.
Guest -
October 29, 2021
Verified Purchase
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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.
pivot was worn out
matthew - December 17, 2020
Tool Type
Plate Joiner
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, none
Parts Used
very easy to replace
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Had 2 units, belonging to a couple of guys I work with, which had damaged hinges.
Penny - December 13, 2019
Tool Type
Plate Joiner
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver
Parts Used
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Right pivot broke.
Jose - February 4, 2019
Tool Type
Plate Joiner
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, phillips screwdriver
Parts Used
Replaced both pivots by loosening screws and reattaching.
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Both pivots worn out
robert - June 28, 2018
Tool Type
Plate Joiner
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Parts Used
Remove the screws in the old pivots, then install the new pivots with the same screws.
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Guide was broken
paul - March 8, 2018
Tool Type
Plate Joiner
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Parts Used
Two screws and replace the part. Done.
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Plastic guide on original pivot broke
david - February 28, 2018
Tool Type
Plate Joiner
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Parts Used
Removed bad part.
Determined exact part from parts list and ordered.
Pivot is part of the guide channel the plate pivots in but is also a surface mount cap.
Reinstall plate in position.
Reinstall left pivot with 2 screws. easily accessible.
Done.
Determined exact part from parts list and ordered.
Pivot is part of the guide channel the plate pivots in but is also a surface mount cap.
Reinstall plate in position.
Reinstall left pivot with 2 screws. easily accessible.
Done.
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The pivot's guiding arc was damaged and would not allow joiner to open/close.
RICK - November 3, 2017
Tool Type
Plate Joiner
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Parts Used
1. Removed left and right screws, releasing the plate.
2. Replaced the old left pivot with the new pivot.
3. Replaced left and right screws.
Luckily, ereplacementparts had the left pivot in stock. Other websites indicated the part was obsolete and unavailable
2. Replaced the old left pivot with the new pivot.
3. Replaced left and right screws.
Luckily, ereplacementparts had the left pivot in stock. Other websites indicated the part was obsolete and unavailable
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Plate jointer
samy - August 9, 2017
Tool Type
Plate Joiner
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Parts Used
Remove the screws from the old pivot and screw in the new one
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Pivot was broken.
Jared - June 23, 2017
Tool Type
Plate Joiner
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Parts Used
Removed old pivots and replaced with new pivots. 2 screw each.
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Pivots were worn preventing accurate alignment
Duane - November 9, 2016
Tool Type
Plate Joiner
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Parts Used
Remove the screws from the pivots
Remove the pivots
Screw the new pivots on
Remove the pivots
Screw the new pivots on
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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.
