Harbor Freight prices › Automotive › Diagnostic Testing Scanning
MADDOXitem 57588
Master Diesel Compression Test Kit
Base price$109.99
Members' price$109.99
Everyone else$109.99
Benton Harbor, MI shelf$109.99same shelf price as online
$109.99 is its regular price, and this kit has never been on sale or had a coupon in over four years of tracking.
$109.99 is about its normal price.
Why it's Steady
The record shows only regular price changes: $129.99 until mid 2023, $99.99 until the end of April 2026, then $109.99 since early May. There are no past sales and no coupons, and nothing is announced. The $99.99 low was a regular price, not a deal, and it has been up about 10% for six months. One store's shelf matches today's $109.99. A coupon could still show up, but nothing in the record points to one.
Written by AI from this item's price record and coupons. The prices on this page are the record itself.
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The numbers
- Today
- $109.99
- Usual price
- $109.99
- 90-day low
- $109.99
- Lowest tracked
- $99.99
- Matco equivalent
- $531.95
- Today, members
- $109.99
- Usual for members
- $109.99
- 90-day low
- $109.99
- Lowest tracked
- $69.99
- Matco equivalent
- $531.95
Apr 30, 2026
Jul 28, 2024
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 | $109.99 | $109.99 |
Price history
Best price for anyoneInside Track Club priceRegular price
Every price change
| When | Price | Members | Why |
|---|---|---|---|
| May 1, 2026 to Oct 24, 2026177 days, checked 3x | $109.99 | Regular price | |
| Jul 29, 2024 to Apr 30, 2026641 days, checked 0x | $99.99 | Regular price | |
| Jul 1, 2024 to Jul 28, 202428 days, checked 0x | $99.99 | $69.99 | Regular price |
| May 27, 2024 to Jun 30, 202435 days, checked 0x | $99.99 | Regular price | |
| Apr 29, 2024 to May 26, 202428 days, checked 0x | $99.99 | $69.99 | Regular price |
| Jun 9, 2023 to Apr 28, 2024325 days, checked 1x | $99.99 | Regular price | |
| Jun 5, 2022 to Jun 8, 2023369 days, checked 1x | $129.99 | Regular price |
Tracking since Oct 16, 2026. Last checked Oct 17, 2026.