HD Expert 16-534 50/50 Pre-Diluted Extended Life Heavy Duty Antifreeze/Coolant, Extreme, 3.78L
Click to zoom in

HD Expert 16-534 50/50 Pre-Diluted Extended Life Heavy Duty Antifreeze/Coolant, Extreme, 3.78L

SKU: REC16-534
Product Type: Premixed Antifreeze
2 sold in last 8 days
$21.65
Inventory:
$21.65
Trust Badge

Guaranteed Fitment

Always the correct part

Added Value

Performance matched parts

In-House Experts

We know our products

Nationwide Delivery

Economy shipping

HD Expert™ 50/50 Pre-Diluted Extended Life Heavy Duty Antifreeze/Coolant is the ultimate solution for modern on-road, off-road, farm & marine engines. Our coolant provides superior protection against rust and corrosion for all coolant system metals, while providing extended protection against wet sleeve liner cavitation pitting and extreme temperature variations. HD Expert™ is compatible with all newer aluminum radiators, making it the perfect choice for those seeking reliable coolant for their modern engines. It is designed to withstand temperatures ranging from -37°C to 129°C, preventing both summer overheating and winter freezing. To ensure the best performance, it is recommended to use this coolant in accordance with OEM and product manufacturer’s guidelines. As a pre-mixed coolant, HD Expert™ 50/50 Pre-Diluted is a hassle-free solution. Invest in HD Expert™ 50/50 Pre-Diluted today and experience unparalleled protection for your engine.
  • HD Expert™ meets/exceeds these industry standards & manufacturer specifications: ASTM D3306, D6210, D7583, D7820; AS/NZS 2108.2004 Type A; Cummins 3666132; DDC 7SE 298; GB 29743-2013; TMC RP329B; TMC RP338.
  • Recommended for use in heavy duty diesel applications where extended service interval and aluminum compatibility is required. and in on-road truck, off-road, farm, and marine engine applications.
  • HD Expert™ provides up to 1,200,000 km, 750,000 miles, 15,000 hours or 8 years of life under normal operating conditions, with proper maintenance of coolant & nitrite levels in line with engine requirements.
  • HD Expert™ ProShield™ OAT Corrosion Defense protects against corrosion and deterioration while offering excellent high temperature aluminum and liner cavitation protection.
  • Compatible with: CAT EC-1 Cummins 1460; Freightliner 48-22880; GM Heavy Truck; International Truck and Engine/Navistar CEMS B-1; MAN 324; MB DBL 7700; MTU MTL 5048; Kenworth RO26-170-97; Mack 014GS17009; and many others.
  • Our product is perfect for top-ups, and flush & fill. HD Expert™ is ideal for all new off-road and on-road heavy duty vehicles if properly maintained to manufacturer’s recommendations.
  • HD Expert™ 50/50 Pre-Diluted does not require dilution and is ready to use straight out of the bottle, so you can spend less time worrying about your engine and more time getting the job done.
  • HD Expert™ products are proudly formulated in Canada.
  • HD Expert™ 50/50 Pre-Diluted is available in a 3.78 L size for your convenience.

customers are viewing this product
HD Expert 16-534 50/50 Pre-Diluted Extended Life Heavy Duty Antifreeze/Coolant, Extreme, 3.78L

Trusted by Thousands


Rock Solid Hitch

Solid hitch with serious strength and clean powder coat, heavy to lift, but installs easy and tows perfectly!!

Great Shipping

Shipping was quick and on time - exactly what I needed for my small-block build - would buy again for sure

Perfect Fit Mats

Weatherbeater mats fit my work truck perfectly. Dropped them in and nothing moves. Truly a great upgrade

Sleek Visors

Window visors look incredible and feel durable, install was simple. Zero wind noise on the highway!

Leveling Success

Leveling kit components were well packed. Instructions lacking, but online videos helped. Rides level now and feels planted.

Found Single Lifters

Found single lifter pairs in stock here when others required full sets, fast shipping got me racing again, hell yeah!!

Desert Series Bumper

Rear bumper upgrade looks better than factory plastic. Install was easy, and functionality is miles ahead. Highly recommended.

Lomax Fitment

Tonneau cover fit is excellent. Clear instructions and a smooth install. Delivery to my door was super convenient

Next Day Turbo

Turbo arrived next morning and matched description. Bolted up cleanly and truck is back to full power.

Legend Grille Guard

Husband’s birthday grille guard is rock solid, looks sharp he loves it so much!!! Thanks again

Shipping Protection Helped

Customer service handled a damaged shipment immediately. Refund was painless. I’ll shop here again.

Easy Exhaust Install

Exhaust system installed in two hours on my first try. Perfect fit and the sound is pure joy.

Do you offer wholesale or jobber pricing?

Yes. Wholesale pricing is available for legitimate businesses that provide a valid business number or equivalent proof. Ongoing purchase volume is required to maintain discount eligibility. One-time personal buyers aren’t eligible.

Will this part fit my vehicle?

If a product page clearly lists fitment for your vehicle and the description leaves no reasonable doubt, we’ll cover the cost of return if it doesn’t fit. Exclusions apply if prior modifications cause the issue. When browsing self-serve, you’re responsible for confirming compatibility by checking manufacturer fitment data and notes. If unsure, contact us before ordering and we’ll verify it for you.

Do you offer technical support or installation advice?

We help where possible on a case-by-case basis. Most manufacturers include detailed instructions and tech support contacts. Because our catalog spans hundreds of brands, we can’t provide every torque spec or procedure, but we’ll connect you with the manufacturer if needed.

Do you offer price matching?

We don’t guarantee price matching, but we’re happy to review a legitimate in-stock offer from another Canadian retailer. The comparison must include all costs such as product price, shipping, taxes, and fees, and the item must be identical and available for immediate purchase. We won’t lose money to match unsustainable or out-of-stock pricing.

Can I exchange an item?

Yes. In-store exchanges happen on the spot when stock is available. For shipped orders, the original item must be returned first. Once received and inspected, we can issue a store credit toward the correct part or replacement. We can’t send a second item while the first is still in your possession without payment for both.

Are prices shown before or after tax?

All prices on the site are before tax. GST, HST, or PST is calculated at checkout based on your shipping address..

Need Help? We've Got Answers.

Find quick solutions to the most common questions about shipping, returns, compatibility, and support.

Your cart

×