Description
Practical value and everyday use
300637 – Single Knurled Driver 3/8 for Double-Flat Shaft Windshield Wiper Arms is listed in Arms. For a practical buying decision, start with this source-backed point: Category: Replacement Parts / Windshield Wipers & Parts / Wipers / Arms.
The source also records: Product identity: 300637 – Single Knurled Driver 3/8 for Double-Flat Shaft Windshield Wiper Arms. Use this additional stated detail to judge day-to-day usefulness and package value: Product identity: 300637 – Single Knurled Driver 3/8 for Double-Flat Shaft Windshield Wiper Arms.
Value-focused decision
Compare those stated features and included items with the current on-page offer and the exact quantity needed. No performance claim is added beyond the source product record.
Complete source-backed product details
No structured vehicle fitment data is available. Compare the listing with the vehicle and existing part before ordering.
Value, practical use, and budget judgment
Buying guidance
Quick decision
A practical arms option when the listing details match the repair requirement.
Choose this if
- The specifications and visible package contents match the part you intend to replace.
- The available fitment notes and part references align with your application.
Before you buy
- Compare the listing title, photos, package contents, and specifications with the part being replaced.
- Confirm vehicle compatibility and installation requirements before ordering.
Customer feedback
Ratings and written reviews
4.9 / 5
79 source ratings
Source: Amazon. Imported marketplace feedback is shown for product research and is not a review of a purchase made on this website.
Vinnfizz –
RV dealer installed new gear box on motor under warrantee repair but botched the installation. It hasn’t worked correctly since so as a DIYer I’m going through whole system to find out why. Found collet split on driver’s side. Motor may not be set correctly for original sweep pattern.We will see!
Customer –
Fits fine and wiper now works. Old one split in 2.
Rodger M. –
Exactly the part I needed at a great price.
Katherine L Carano –
Worked great
David Irvin –
it was exactly what I neededthanks
Customer –
Quality is good but over priced for single item.Purchased the same item from your exact supplier, one pack of ten for only two dollars more.Your advertisement is misleading.
Shopshop –
We ordered this to replace the broken one for our 2005 Dutch Star windshield wipers. Exactly what we needed.
Robert Pulliam –
This part allows for the correct positioning of windshield wipers on class A motorhomes and I just found out from my son who is a school bus mechanic is also used on flat nosed school buses. It will break in two, during my initial search no one could tell me where to find this part, after inquiring several places I had just about given up and then I checked google, bingo, Amazon stocks this piece at a decent price. So far it’s working good and the wiper is positioned good.