Rust-Oleum 248657-6PK Stops Rust Undercoating Spray
15 oz, Rubberized Black, 6 Pack
Price as of 2026-07-07. Check Amazon for the current price.
Quick Decision
Price Intelligence
- Budget:$8–$26
- Mid-range:$26–$135← You are here
- Premium:$135+
Is This Right For You?
- •Top 1% bestseller in undercoatings — proven market demand
- •Rust-Oleum loyalists — the brand spans 71 products in our database
📊 Based on data analysis of 69 products in this category.
Mubboo Score: A
How we calculate the Mubboo Score
Quality (45%): customer rating, normalized to a 10-point scale
Popularity (35%): review volume vs the category leader, log-scaled
Value (20%): price position vs other undercoatings
Computed from live Amazon rating, review count, and price across 69 undercoatings available to US consumers · last refreshed 2026-07-07.
How It Compares
This Product Rust-Oleum 248657-6PK Stops Rust Undercoating Spray | Most Popular Rust-Oleum 248656-6PK Stops Rust Professional Grade | Best Rated Eastwood Internal Frame Coating Aerosol | Best Value Krylon Automotive Undercoating | |
|---|---|---|---|---|
| Price | $29.99 | $57.68 | $42.99 | $23.25 |
| Rating | 4.6/5 | 4.6/5 | 4.6/5 | 4.5/5 |
| Reviews | 3,800 | 7,520 | 925 | 1,389 |
| Mubboo Score | A | B+ | B+ | A- |
What People Say
Synthesized from 40 reviews · 100% verified purchases.
Thorough surface preparation with degreaser and wire brushing is key for long-lasting adhesion. Expect some cans to clog or drip, work in a well-ventilated space, and allow extra curing time before handling or exposing to moisture.
- Strong adhesion and durability
- Easy application and smooth finish
- Good coverage and even coat
- Great value for the price
- Effective rust protection and longevity
- Spray can defects or clogging
- Messy, runny application
- Slow curing time
- Strong fumes requiring ventilation
Related Video Reviews
About Rust-Oleum
- 71 products in our database
- Average rating: 4.5/5 across all products
- Price range: $5.96 – $121.39
- Categories: adhesives-and-sealers, boating-and-sailing, Car Wax, finishes-sealers-and-stains, Fuel Additives, paint-and-primer
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Bottom Line
Rust-Oleum 248657-6PK Stops Rust Undercoating Spray earns Mubboo Score A. Priced at $30 — a mid-range option, below the category average of $90. Rated 4.6/5 from 3,800+ reviews. Strong buy if: top 1% bestseller in undercoatings, rust-oleum loyalists.
Frequently Asked Questions
Is the Rust-Oleum 248657-6PK Stops Rust Undercoating Spray worth buying in 2026?
It earns a Mubboo Score of A, with a 4.6/5 rating from 3,800 reviews — better than 67% of undercoatings we track.
How much does the Rust-Oleum 248657-6PK Stops Rust Undercoating Spray cost?
It is currently $29.99 — mid-tier pricing for undercoatings.
How does the 248657-6PK Stops Rust Undercoating Spray compare to other undercoatings?
The category's most-reviewed alternative is the Rust-Oleum 248656-6PK Stops Rust Professional Grade (4.6/5, 7,520 reviews, $57.68). The 248657-6PK Stops Rust Undercoating Spray carries a Mubboo Score of A vs B+.
Sources & References
Products available through US retailers. Prices in USD. Sales tax varies by state and is not included.
Mubboo may earn a commission on purchases made through affiliate links. This does not affect our Mubboo Score, product rankings, or editorial judgments. Prices are accurate as of the last sync (2026-07-07) and may change.