Where to Buy Replacement Parts

When a machine goes down, finding the right replacement part quickly matters. Below is a simple guide to the most common places to buy parts and how they compare, so you can decide which option is best for your repair.

Note: Parts-Diagrams.com helps you identify the correct OEM part numbers and locate options. Many of our model pages include links to purchase replacements from trusted online retailers.

1. Major Online Retailers (Amazon & Others)

For many common parts, large online retailers like Amazon offer fast shipping, competitive pricing, and a wide selection of OEM and aftermarket options.

  • Excellent for popular models and frequently replaced parts.
  • User reviews can help you spot quality issues or confirm fit.
  • Easy returns if the part doesn’t solve the problem.

Best for: Homeowners and technicians who already know the exact part number and want a fast, convenient purchase.

2. OEM Manufacturers

Buying directly from the original equipment manufacturer (OEM) or their official online store ensures you are getting parts designed specifically for your machine.

  • Guaranteed compatibility when matched to the correct model and serial number.
  • Access to technical bulletins, updated part numbers, and service information.
  • Often the only source for complex assemblies or specialty components.

OEM sources may cost more than generic alternatives, but they are usually the safest choice for critical components such as control boards, pumps, and safety devices.

3. Authorized Service Centers & Local Dealers

Local dealers and authorized service centers can supply parts and also help diagnose the issue if you’re unsure what failed.

  • Hands-on support from technicians familiar with your brand.
  • Ability to compare parts in person and avoid shipping delays.
  • Helpful when you need both parts and service on the same visit.

This option is ideal if the machine is still under warranty, you prefer professional installation, or you want confirmation before ordering expensive parts.

4. Specialty Parts Distributors

Some websites focus only on replacement parts for specific equipment types, such as ice machines, pressure washers, or commercial appliances.

  • Deep catalogs tailored to a specific industry or brand group.
  • Better technical support for diagnosing hard-to-find issues.
  • Often stock both OEM and carefully selected aftermarket options.

OEM vs. Aftermarket Parts

Once you know the part number, you may see multiple options: genuine OEM, aftermarket, or “compatible” parts. Each has pros and cons.

  • OEM Parts: Made or approved by the original manufacturer. Best choice for reliability and exact fit.
  • Aftermarket Parts: Made by third-party companies. Can be more affordable, but quality varies by brand.
  • Rebuilt / Remanufactured: Existing components that have been repaired or upgraded. Useful for high-cost items like compressors or gearboxes.

Tip: For safety-critical or electronic components, OEM is usually recommended. For hardware, panels, and non-critical items, a reputable aftermarket option can be a good value.

How Parts-Diagrams.com Fits In

The hardest part of any repair is often figuring out which part to buy. That’s where Parts-Diagrams.com comes in.

  • We organize model-specific PDF parts diagrams and exploded views.
  • We help you identify the correct OEM part numbers for your equipment.
  • Where available, we provide direct links to purchase options from trusted retailers, including Amazon.

Quick Checklist Before You Order

  1. Confirm your full model number (and serial number, if required).
  2. Use the parts diagram to identify the exact OEM part number.
  3. Decide between OEM and aftermarket based on budget and criticality.
  4. Check return policies and shipping times from your chosen seller.

Affiliate Disclosure

Parts-Diagrams.com is reader-supported. Some pages include affiliate links to retailers such as Amazon. If you make a purchase through these links, we may earn a small commission at no additional cost to you. This helps us maintain and expand our library of free parts diagrams.