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The OTC 5025 Diesel Exhaust Fluid Refractometer Kit is a portable, precision optical instrument designed to measure DEF concentration with 0.5% accuracy. Essential for maintaining SCR systems in heavy-duty diesel engines, it ensures compliance with EPA NOx emission standards for vehicles manufactured after 2010. The kit includes all necessary tools for quick, reliable testing, making it a must-have for professional operators and technicians aiming to optimize engine performance and avoid costly downtime.

















| ASIN | B0054WI5KQ |
| Best Sellers Rank | #66,589 in Automotive ( See Top 100 in Automotive ) #4 in Heavy Duty Vehicle Antifreeze, Coolant & Diesel Exhaust Fluid |
| Brand Name | OTC |
| Customer Reviews | 4.8 4.8 out of 5 stars (355) |
| Global Trade Identification Number | 00731413559846 |
| Included Components | Unit^Instruction Guide |
| Item Dimensions | 12.3 x 5.9 x 2.85 inches |
| Item Type Name | DEF Refractometer |
| Item Weight | 1 g |
| Manufacturer | OTC |
| Material Type | Glass, Metal, Plastic |
| Model | 5025 |
| Number of Items | 1 |
| Part Number | 5025 |
| UPC | 731413559846 |
| Unit Count | 1 Count |
| Warranty Description | 1 year manufacturer |
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