Flame King YSN420ASME 420LB
(120 Gallon) ASME Vertical Steel Propane Tank, White
Price as of 2026-06-20. Check Amazon for the current price.
Quick Decision
Price Intelligence
- Budget:$8–$17
- Mid-range:$17–$40
- Premium:$40+← You are here
Is This Right For You?
- •Buyers who prioritize quality over price in gas supply
- •Flame King loyalists — the brand spans 32 products in our database
- •You're on a tight budget — $1209 above the category average of $42
- •Camco Lid Replacement Cap Kit Tank Cover offers a better rating (4.8/5) at a similar or lower price ($23)
- •Champs Propane Tank Gauge Level Indicator Leak Detector — 99% cheaper at $10 (Score A)
- •Camco Lid Replacement Cap Kit Tank Cover — higher rated at 4.8/5 ($23)
📊 Based on data analysis of 165 products in this category.
Mubboo Score: C+
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 gas supply
Computed from live Amazon rating, review count, and price across 165 gas supply available to US consumers · last refreshed 2026-06-20.
How It Compares
This Product Flame King YSN420ASME 420LB | Most Popular Flame King KT18ACR-2 2-Stage Auto Changeover LP Propane Gas | Best Rated Camco Lid Replacement Cap Kit Tank Cover | Best Value Champs Propane Tank Gauge Level Indicator Leak Detector | |
|---|---|---|---|---|
| Price | $1250.91 | $59.23 | $23.16 | $9.99 |
| Rating | 4.5/5 | 4.4/5 | 4.8/5 | 4.4/5 |
| Reviews | 153 | 8,298 | 2,944 | 1,599 |
| Mubboo Score | C+ | B+ | A | A |
What People Say
Synthesized from 40 reviews · 100% verified purchases.
Always check for leaks with soapy water after installation, especially on hose connections. For regulators, open tank valves slowly to avoid false empty indicators, and consider keeping spare pigtails as they may crack.
- Easy Installation
- Reliable Performance in All Conditions
- Clear Fuel Level Indication
- Good Value
- Automatic Tank Switchover
- Leaking Hoses and Connection Failures
- Build Quality and Durability Issues
- Confusing Changeover Indicator
- Missing Accessories
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About Flame King
- 32 products in our database
- Average rating: 4.5/5 across all products
- Price range: $15.38 – $1250.91
- Categories: Camping Stoves, Fire Pits, gas-supply
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Bottom Line
Flame King YSN420ASME 420LB earns Mubboo Score C+. Priced at $1251 — a premium option, above the category average of $42. Rated 4.5/5 from 153+ reviews. Strong buy if: buyers who prioritize quality over price in gas supply, flame king loyalists. Skip if: you're on a tight budget — Flame King KT18ACR-2 2-Stage Auto Changeover LP Propane Gas (Score B+, $59) may fit better.
Frequently Asked Questions
Is the Flame King YSN420ASME 420LB worth buying in 2026?
It earns a Mubboo Score of C+, with a 4.5/5 rating from 153 reviews — better than 69% of gas supply we track.
How much does the Flame King YSN420ASME 420LB cost?
It is currently $1250.91 — premium-tier pricing for gas supply.
How does the YSN420ASME 420LB compare to other gas supply?
The category's most-reviewed alternative is the Flame King KT18ACR-2 2-Stage Auto Changeover LP Propane Gas (4.4/5, 8,298 reviews, $59.23). The YSN420ASME 420LB carries a Mubboo Score of C+ 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 (2026-06-20) and may change.