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P599 Oring Cat 13963 - DeWalt

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$5.29
Out of stock
SKU
P599
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Know Before You Order

Some orders ship faster than others

We stock tens of thousands of parts in our warehouse, and most in-stock orders ship within 24 business hours. Because we specialize in hard-to-find tool parts, some items are sourced directly from the manufacturer after your order is placed and may require 10–14 business days before shipment. We believe in being transparent about timelines so you know what to expect before ordering. If timing is critical, please contact with your part number for an estimated delivery timeframe.

Why does M&M Tool Parts offer parts other companies don’t?

As a family-owned business, we’ve built long-standing relationships with trusted manufacturers across the industry. These partnerships allow us to source specialty parts that are often unavailable through larger retailers or online marketplaces. In many cases, M&M Tool Parts provides one of the few reliable ways to obtain these components — and we work hard to get them to you as quickly as possible.

What should I expect after placing my order?

Our team begins processing orders immediately. If your item is stocked locally, you’ll typically receive tracking information within 24 business hours. For manufacturer-sourced items, we coordinate directly with vendors to secure and ship your order as efficiently as possible. We understand downtime is frustrating, and we sincerely appreciate your patience while we help source parts that can often be difficult to find elsewhere.

This DeWalt P599 CAT 13963 Pump O-Ring is a genuine OEM replacement component used in compatible pressure washer assemblies.
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The DeWalt P599 CAT 13963 Pump O-Ring is a genuine OEM replacement component used in compatible pressure washer assemblies. Manufacturer service information identifies this item asO-RING, CAT 13963.

Product Specifications

Part Number: P599
Part Type: CAT 13963 Pump O-Ring
Manufacturer: DeVilbiss
Manufacturer Description: O-RING, CAT 13963
Application: Pressure Washer CAT Pump Assembly
Figure Number in DeWalt DH3028 Type 0: 337
Quantity Used in DeWalt DH3028 Type 0: 1
Condition: Genuine OEM DeVilbiss Replacement Part

Tool Compatibility

DeVilbiss P599 is documented for compatible configurations of the following pressure washers:

DeWalt DH3028 Type 0
DeWalt DPD3000IC Type 1
DeWalt DPD3300 Type 1
DeWalt DPH3800 Type 1

This list highlights verified applications and may not include every compatible regional or cross-branded model. Verify the complete model and type number against the applicable manufacturer parts diagram before ordering.

Part Function

This cat 13963 pump o-ring forms a pressure-tight seal between mating pump components and helps prevent fluid leakage at its designated joint.

When to Replace

Replace this component if it is cut, cracked, flattened, hardened, swollen, missing, or unable to form the required seal. Inspect the complete assembly before ordering because the same symptom can be caused by nearby seals, valves, fittings, hardware, or other pump components.

Important Compatibility Information

Part P599 is documented for specific pressure washer and pump configurations. Do not select this component based only on equipment type, PSI rating, physical appearance, or approximate dimensions. Similar machines may use different pumps, engines, fittings, or production revisions.

Confirm the exact equipment model, type number, and applicable parts breakdown before ordering. Components that appear similar should not be assumed interchangeable unless the manufacturer documents a replacement or supersession.

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You're reviewing:P599 Oring Cat 13963 - DeWalt
Compatibility
  1. DeWALT Parts
  2. DeWALT Pressure Washer Parts
  3. DeWalt DH3028 Type 0 Parts - Pressure Washer
  4. DeWalt DPD3000IC Type 1 Parts - Pressure Washer
  5. DeWalt DPD3300 Type 1 Parts - Pressure Washer
  6. DeWalt DPH3800 Type 1 Parts - Pressure Washer
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