BlueDEF Diesel Exhaust Fluid, 2.5 gal
BlueDEF Diesel Exhaust Fluid, 2.5 gal
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BlueDEF Diesel Exhaust Fluid, 2.5 gal

BlueDEF Diesel Exhaust Fluid, 2.5 galBlueDEF Diesel Exhaust Fluid 2 5 gal Box for Diesel Vehicles with SCR Systems 1 pack box4 pack BlueDEF Diesel Exhaust Fluid 2 5 Gal Box for Diesel Vehicles with SCR Systems 1 Pack Box3 pack BlueDEF Diesel Exhaust Fluid 2 5 Gal Box for Diesel Vehicles with SCR Systems 1 Pack Box2 pack BlueDEF Diesel Exhaust Fluid 2 5 Gal Box for Diesel Vehicles with SCR Systems 1 Pack Box
Pack Size:Single

Key item features

  • Purity Assurance: Triple-filtered and lab-tested to ensure exceptional purity, contributing to the optimal performance of diesel engines.
  • System Compatibility: Fully compatible with all diesel Selective Catalytic Reduction (SCR) systems, ensuring broad applicability across various diesel vehicles.
  • Industry Leading: Produced by America's number one Diesel Exhaust Fluid (DEF) brand, reflecting its prominent market position and reliability.
  • Specification Adherence: Meets or exceeds the strictest Original Equipment Manufacturer (OEM) specifications, guaranteeing high standards of quality and performance.
  • Certified Standard: American Petroleum Institute (API) Certified, confirming its compliance with recognized industry standards for diesel exhaust fluid.
  • ISO Conformance: Conforms to the ISO-22241-1 specification for DEF, indicating adherence to international quality and manufacturing guidelines.
  • Formulation Excellence: Combines high purity synthetic urea and deionized water, specifically formulated for effective use in SCR systems on diesel engines.
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Current price is $17.975.6 ¢/fl oz
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Customer ratings & reviews

4.7 out of 5 stars
stars2,704 ratings682 reviews
How item rating is calculated
  1. 5 stars88% (2,376)
  2. 4 stars6% (159)
  3. 3 stars2% (42)
  4. 2 stars1% (31)
  5. 1 star4% (96)

Reviews summary

Pros

  • : Offered at a lower cost compared to others.
  • : Designed for use with diesel engines, easy to handle.
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Showing 1-3 of 682 reviews

Feb 16, 2026
Henry
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

the blue Def works great Walmart carries it and it is about the cheapest place if I have to buy it in any other store it is double the price and if I cannot find the blue DEF I am forced to use no name brands and I have nothing but problems check engine light comes on I will get a 75 mi to 15 mile an hour see dealer immediately as soon as I put the blue d e f back in all my problems go away.

Helpful?1HC3HP3AIDVQ16933407
Sep 9, 2024
WalmartCustomer
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

I've searched in vain for a good price for Blue DEF, until I cam across Wal Mart's prices. Another big box store I shop at didn't carry it. Local auto parts store prices are sky high- but Wal Mart not only offered the very lowest price- it offered free, timely and dependable delivery! Kudos to Wal Mart!!

Incentivized Review
Helpful?1HC3HP3AIDVQ16933407
Nov 8, 2025
Walmart customer
5 out of 5 stars review

Seller Verified Purchase

DEF

I've been using this kind of DEF in my trucks since 2018 and I've never had a problem I will continue to use it and recommend it. Sam's has the best price for it.

Review from samsclub.com
Helpful?1HC3HP3AIDVQ16933407