Harbor Freight prices › Automotive › Diagnostic Testing Scanning
MADDOXitem 64814
Combustion Leak Detector
Base price$37.99
Members' price$37.99
Everyone else$37.99
Benton Harbor, MI shelf$37.99same shelf price as online
$37.99 is the regular price, and this item has never been on sale or had a coupon in 4+ years of tracking.
$37.99 is about its normal price.
Why it's Steady
The record has no sales and no coupons since June 2022, and none are announced. The only movement is regular price creeping up from $26.99 to $37.99, most recently in late May 2026. Waiting hasn't helped here: the price has only gone up, and one store's shelf matches at $37.99.
Written by AI from this item's price record and coupons. The prices on this page are the record itself.
Price alert
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The numbers
- Today
- $37.99
- Usual price
- $37.99
- 90-day low
- $37.99
- Lowest tracked
- $26.99
- Lisle equivalent
- $46.99
- Today, members
- $37.99
- Usual for members
- $37.99
- 90-day low
- $37.99
- Lowest tracked
- $26.99
- Lisle equivalent
- $46.99
Nov 17, 2022
Nov 17, 2022
Prices by store
Harbor Freight prices some items differently by store, and once you pick a store its site shows that store's shelf price. These come from contributors who share their store; the main price above is the base price, the one HF shows before you pick a store.
| Store | Today | Usually |
|---|---|---|
| Benton Harbor, MI store 583, checked Oct 17, 2026 | $37.99 | $37.99 |
Price history
Best price for anyoneInside Track Club priceRegular price
Every price change
| When | Price | Members | Why |
|---|---|---|---|
| Jul 4, 2026 to Oct 24, 2026113 days, checked 2x | $37.99 | Regular price | |
| Jun 6, 2026 to Jul 3, 202628 days, checked 0x | $37.99 | $27.99 | Regular price |
| May 29, 2026 to Jun 5, 20268 days, checked 1x | $37.99 | Regular price | |
| Dec 19, 2025 to May 28, 2026161 days, checked 1x | $34.99 | Regular price | |
| Jun 27, 2025 to Dec 18, 2025175 days, checked 0x | $33.99 | Regular price | |
| May 30, 2025 to Jun 26, 202528 days, checked 0x | $33.99 | $27.99 | Regular price |
| Nov 17, 2024 to May 29, 2025194 days, checked 1x | $33.99 | Regular price | |
| Jul 29, 2024 to Nov 16, 2024111 days, checked 1x | $31.99 | Regular price | |
| Apr 28, 2024 to Jul 28, 202492 days, checked 1x | $29.99 | Regular price | |
| Nov 18, 2022 to Apr 27, 2024527 days, checked 1x | $27.99 | Regular price | |
| Jun 5, 2022 to Nov 17, 2022166 days, checked 1x | $26.99 | Regular price |
Tracking since Oct 16, 2026. Last checked Oct 17, 2026.