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HARD-ON by woolwax™ 4 Gallon Pail Auto Truck Undercoating Black Water Based Corrosion Inhibitor Coating Non-Rubber Stops Rust Chip Guard Sound Deadener Solvent Free
✅ In stock
⭐ Lowest price we've tracked
F
Grade
Analysis Confidence
100%
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Nov 1, 2026 5:51 AM · Prices & availability subject to change
Is This a Good Price on Amazon?
💤 Not a Deal- 💤Verdict: Not a Deal. Price is at or above historical norms. Best to wait for a sale.
- 💰The current price sits right around what this item typically fetches.
- 📉Our analysis places this at the most competitive price point we have ever tracked for this product — an exceptional moment to buy.
- ➡️Pricing has held fairly steady, with no strong push in either direction.
How We Scored This Deal
Price Competitiveness
0/28
Recent Value
0/22
Market Standing
0/20
Deal Strength
20/20
Momentum
4/10
📝 Product Overview
🏪 Sold by
Woolwax / Kellsport products
🚚 Shipping
Free Shipping
Product Details
✓Hard-On high performance permanent hard undercoating. NOT rubber.
✓Hard-On is developed to be applied on newer surfaces. It is not intended to be used on surfaces with surface rust. (Use original Woolwax for rusted frames)
✓Expected life expectancy is 5-10 years depending on vehicle use.
✓Ideal product for very long-term vehicle protection as well as trailers, RV’s, school buses, motor homes, truck box trailers, delivery trucks, and more.
✓Ideal product for very long-term vehicle protection as well as trailers, RV’s, school buses, motor homes, truck box trailers, delivery trucks, and more.
✓This is NOT a rubber coating. It dries to a very hard shell paint-like black coating.
✓Incredible durable protection from salt, rust, moisture, and road debris. Acts as a chip guard.
✓Acts as a sound and vibration deadener.
⚙️ Specifications
Brand
woolwax
Item Form
Liquid
Specific Uses For Product
corrosion control, rustproofing, stop rust
Item Weight
46 pounds
Number of Items
1
Recommended Uses For Product
corrosion control, rustproofing
Brand Name
woolwax
Global Trade Identification Number
00855833008583
Manufacturer
woolwax
Model Number
wwho5
Part Number
wwho4