84003387 Shaft Output Gear Reduction Briggs and Stratton Genuine OEM Part

BRIGGS & STRATTON
Genuine Part
$207.18
$186.46
$20.72
Availability:
Special Order: Estimated lead time 3 Weeks (Factory Backorder)

Expected release date is Sep 30th 2026

Special Order
This item is not in stock. It has a factory backorder greater than 10 days from the request of the order. Expected release date is Sep 30th 2026

Sold Out

Payment Methods
  • AMERICAN EXPRESS
  • Pay
SKU:
84003387
UPC:
047282816981
MPN:
84003387
Condition:
New
Shipping:
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BRIGGS & STRATTON Original partOriginal Part Certification
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Description

  • Precision-engineered for smooth power transfer in your Briggs & Stratton equipment
  • Durable construction designed to withstand demanding outdoor conditions
  • Genuine BRIGGS & STRATTON OEM part ensuring exact fit and reliable operation

84003387 Shaft Output Gear Reduction - Powering Your BRIGGS & STRATTON Equipment with Reliability and Precision

The BRIGGS & STRATTON 84003387 Shaft Output Gear Reduction is an essential component designed to transfer power efficiently within your handheld outdoor power equipment. This genuine BRIGGS & STRATTON OEM part plays a critical role in ensuring the proper operation of the drive system, helping to maintain the original performance and dependability you expect. Whether your equipment needs a replacement to restore seamless function or preventive maintenance, the 84003387 gear reduction shaft offers the precise fit and reliability to keep your BRIGGS & STRATTON tools working as intended.

How the BRIGGS & STRATTON 84003387 Gear Reduction Shaft Optimizes Power Transmission

This shaft output gear reduction serves as a vital link within the drivetrain of your BRIGGS & STRATTON outdoor power equipment, such as zero-turn mowers or riding mowers. It functions by reducing the rotational speed from the engine to an optimal level while increasing torque, which improves the control and efficiency of the cutting or moving mechanisms. Proper operation of this part ensures smooth and consistent power delivery, contributing directly to the reliability and performance of your equipment.

Signs It's Time to Replace Your BRIGGS & STRATTON 84003387 Shaft Output Gear Reduction

Replacing the shaft output gear reduction promptly when it shows signs of wear helps prevent further damage and keeps your machine running reliably.

  • Unusual noises or grinding sounds from the transmission area during operation
  • Reduced responsiveness or slipping in mower drive or cutting functions
  • Visible wear, damage, or excessive play in the gear or shaft components

Common Questions About Your BRIGGS & STRATTON 84003387 Shaft Output Gear Reduction

Is the 84003387 Shaft Output Gear Reduction a genuine BRIGGS & STRATTON OEM part?

Yes, the 84003387 Shaft Output Gear Reduction is a genuine BRIGGS & STRATTON OEM part, designed and manufactured to meet the exact specifications of your equipment for proper fit and reliable operation.

How can I confirm this part fits my BRIGGS & STRATTON mower or equipment?

To ensure proper fitment, verify your equipment's model and serial number and compare them with the part number 84003387. This step helps confirm compatibility before placing your order.

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Returns Information

You may return new, non-used, and unopened items within 30 days of delivery date under a 20% re-stocking fee in case you do not need it anymore or you have ordered a wrong item.

We cannot accept any returns on "Pumps, Motors, Electrical Items & Transmissions" whether the product is used or new, however in rare cases we may allow an exception under a 40% re-stocking fee.

If you need to return an item, please go to our chat located in the lower right corner, select the option “Returns” and follow the steps to submit your request. Please have on your hands pictures of the item, they will be requested. You will shortly receive an answer from our Customer Service Team providing authorization and return instructions. Likewise, if an exception cannot be authorized, you will receive an answer from us. No returns will be accepted in our warehouse without an RMA number (Return Merchandise Authorization).

All return shipping costs are on customer's responsibility and will not be refundable.

Returns are inspected once they arrive. If the inspection determines that the items are used, non-resellable condition, or damaged, the return will be denied and the customer will be contacted to ship the parts back at the customers' request and cost.

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Cancellations

You may cancel your order, in whole or in part, only if the part is backordered and it isn't ready to ship. Once an order has been shipped, sent from the supplier to our warehouse, or in the dispatch line, we cannot cancel it. If your order is shipped, you will need to follow our return policy to return the items you no longer want.

If you need to cancel an order or item for any reason, you may submit a cancellation request directly through your account to the "more options" section or contact us by live chat. All the cancellation requests are evaluated before its approval. If you submit a cancellation request out of business hours, on a weekend or holiday, it will be processed on the next available business day.

Please allow for the cancellation to be confirmed, and check your account for updates on the status. The cancellation process usually takes 24-48 hours to be confirmed by email. We will process your cancellation request and issue a refund to your original payment method.

In the event that an item becomes no longer available (NLA), we will cancel it from your order and ship the remaining items to you. We will send you an email notification if we cancel any part of your order.

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Some products may contain chemicals known to the State of California to cause cancer or reproductive harm. ⚠️ WARNING: www.P65Warnings.ca.gov

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