- Shop
- /
- Vehicles, Equipment, Tools, and Supplies
- /
- A/C Service
- /
- A/C Diagnostic Sight Glass
A/C Diagnostic Sight GlassFour SeasonsPart # 69215
Ships in 24 hours
64 In Stock

Built on trust. Stocked and shipped from our U.S. distributors.
All parts come with easy returns, full warranty and money back guarantee.
Learn MoreDetails:
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Four Seasons.
Compatible with both R134a and R1234yf systems.
Once the repair is completed, this tool can be used to verify the system was flushed successfully and there is no remaining system debris.
Includes: A/C Diagnostic Sight Glass; Hard-sided carrying case with protective padding; One set of 36 hoses; R134a manual service couplers; R1234yf manual service couplers; R134a low side service port with cap; R1234yf low side service port with cap.
The diagnostic dual refrigerant sight glass tool can be used before the repair to evaluate the condition of the system and to verify the presence of sealers, dyes or other contaminants.
Warranty
Product Details:
| Batteries Included? | Not Included |
| Case Included? | Included |
| Meets / Exceeds OEM? | Yes |
| Style | Combo |
| Type | Diagnostic Tool |
$453.67
Warranty
12 month/24K Miles
QTY

Built on trust. Stocked and shipped from our U.S. distributors.
All parts come with easy returns, full warranty and money back guarantee.
Learn MoreDetails:
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Four Seasons.
Compatible with both R134a and R1234yf systems.
Once the repair is completed, this tool can be used to verify the system was flushed successfully and there is no remaining system debris.
Includes: A/C Diagnostic Sight Glass; Hard-sided carrying case with protective padding; One set of 36 hoses; R134a manual service couplers; R1234yf manual service couplers; R134a low side service port with cap; R1234yf low side service port with cap.
The diagnostic dual refrigerant sight glass tool can be used before the repair to evaluate the condition of the system and to verify the presence of sealers, dyes or other contaminants.
Product Details:
| Batteries Included? | Not Included |
| Case Included? | Included |
| Meets / Exceeds OEM? | Yes |
| Style | Combo |
| Type | Diagnostic Tool |
Our Parts
Your mechanic’s suppliers are our suppliers. Our parts come from the same trusted distributors that supply professional shops nationwide. That means factory-fresh OEM and premium aftermarket parts from authorized channels only. Every order ships from U.S. warehouses.
We partner exclusively with reputable U.S. companies so you can buy with confidence. Every part is new and original from the manufacturer, covered by full warranties, plus our money-back guarantee.
FAQ
Genuine only. We source through the largest U.S. distributors that supply professional shops nationwide. Parts are new and original from the manufacturer, from authorized channels only. No marketplace sellers. No gray imports.
Buy With Confidence
Massive Selection:
Access 400+ trusted brands and thousands of parts—if it fits your vehicle, we’ve got it.

Lightning-Fast Shipping:
Get back on the road sooner with same-day or next-day shipping on most orders.

Expert Support, Anytime:
Our team of real mechanics and parts pros delivers immediately.

Peace-of-Mind Warranty:
Every part is backed by our industry-leading 12 month 24,000 mile warranty.
All your favorite brands in one place




















+ 400 more

The Smarter Way to Get Parts
Partnered with 400+ global suppliers, offering 1 million+ parts with same or next day shipping, and backed by a 12-month / 24,000-mile warranty—HowToo makes getting the right part fast, reliable, and hassle-free. Expert support and install guidance included, every time.
$453.67
Warranty
12 month/24K Miles