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Description
4254212C91 | Genuine International® DEF Sensor Head AssemblyDescription: DEF Sensor Head Assembly Condition: New Brand: International Part Number: 4254212C91 Fitment Guide 4254212C91: For Tier 4 6. 7L ISB QSB A DEF Sensor Head Assembly 4254212C91, sometimes just called a DEF head, is a multi function module that sits inside the Diesel Exhaust Fluid (DEF) tank and monitors key parameters of the DEF. 1. Measures DEF Level The sensor tells the engine computer how much DEF is in the tank. This allows: Low DEF
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.4 ★★★★★
Based on 758 reviews
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Product Reviews
★★★★★ 5
Good product.
Perfect for the office. Thin material, stretchy. Definitely dry clean for longevity purposes. Fit great. Looks sharp on
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Reviewed in the United States on January 29, 2026
★★★★★ 4
Order at least one size larger.
Size runs very small, but a very nice sweater shirt.
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Reviewed in the United States on November 23, 2025
★★★★★ 5
Love these sweaters!
Color: White, Size: X-Large
I love these sweaters! The fabric is excellent, they fit well, so I purchased them in three other colors! Excellent value!
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Reviewed in the United States on April 8, 2026
★★★★★ 5
Primo!!!
Size: XX-Large, Color: Black
The fit was right, the style was sexy and I exuded that same mentality while wearing it! I'm 230lbs 6'2" and I have the 2XL. This top is perfect for cooler weather not too heavy not too light it appears to be just right. I love the quality.
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Reviewed in the United States on December 9, 2025
★★★★★ 5
Good looking shirt
Size: X-Large, Color: Brown
I like it. Nice material, it's warm, and it looks good. The shoulders are a little broad but that's what I get for having narrow shoulders.
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Reviewed in the United States on February 21, 2026
