Harbor Freight prices › Generators & Engines › Generator Accessories
PREDATORitem 57713
3 ft., 20 Amp Generator Adapter
Base price$19.99
Members' price$19.99
Everyone else$19.99
Benton Harbor, MI shelf$19.99same shelf price as online 1 more store
Santa Clara, CA shelf$19.99same shelf price as online 1 more store
$19.99 is about its normal price.
Put the drill down. It's had 13 sales since Jun 2022 that would beat today's price, usually 15% off ($16.99). Less often lately: 1 in the past year. From spots like today's, one came within six weeks about 5 times in 10.
- It went 15% off ($16.99) in early January three years ago. One sale is a hint, not a pattern.
Price alert
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The numbers
- Today
- $19.99
- Usual price
- $19.99
- 90-day low
- $16.99
- Lowest tracked
- $16.99
- Voltec equivalent
- $39.48
- Today, members
- $19.99
- Usual for members
- $19.99
- 90-day low
- $16.99
- Lowest tracked
- $16.99
- Voltec equivalent
- $39.48
Oct 30, 2026
Oct 30, 2026
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 20, 2026 | $19.99 | $19.99 |
| Santa Clara, CA store 349, checked Oct 31, 2026 | $19.99 | $19.99 |
Price history
Best price for anyoneInside Track Club priceRegular price
Every price change
| When | Price | Members | Why |
|---|---|---|---|
| Oct 31, 20261 day, checked 0x | $19.99 | Regular price | |
| Oct 30, 20261 day, checked 0x | $16.9915% off | 15% off any single item (one item a day) | |
| Oct 29, 20261 day, checked 0x | $19.99 | $16.99 | Regular price |
| Apr 30, 2025 to Oct 28, 2026547 days, checked 4x | $19.99 | Regular price | |
| Apr 2, 2025 to Apr 29, 202528 days, checked 0x | $19.99 | $17.99 | Regular price |
| Feb 25, 2025 to Apr 1, 202536 days, checked 0x | $19.99 | Regular price | |
| Jan 28, 2025 to Feb 24, 202528 days, checked 0x | $19.99 | $16.99 | Regular price |
| Apr 29, 2024 to Jan 27, 2025274 days, checked 0x | $19.99 | Regular price | |
| Apr 1, 2024 to Apr 28, 202428 days, checked 0x | $19.99 | $17.99 | Regular price |
| Jan 29, 2024 to Mar 31, 202463 days, checked 0x | $19.99 | Regular price | |
| Jan 1, 2024 to Jan 28, 202428 days, checked 0x | $19.99 | $16.99 | Regular price |
| Oct 29, 2023 to Dec 31, 202364 days, checked 0x | $19.99 | Regular price | |
| Oct 1, 2023 to Oct 28, 202328 days, checked 0x | $19.99 | $16.99 | Regular price |
| Aug 26, 2023 to Sep 30, 202336 days, checked 0x | $19.99 | Regular price | |
| Jul 29, 2023 to Aug 25, 202328 days, checked 0x | $19.99 | $16.99 | Regular price |
| Jun 24, 2023 to Jul 28, 202335 days, checked 0x | $19.99 | Regular price | |
| May 27, 2023 to Jun 23, 202328 days, checked 0x | $19.99 | $16.99 | Regular price |
| Apr 22, 2023 to May 26, 202335 days, checked 0x | $19.99 | Regular price | |
| Mar 25, 2023 to Apr 21, 202328 days, checked 0x | $19.99 | $16.99 | Regular price |
| Jan 28, 2023 to Mar 24, 202356 days, checked 0x | $19.99 | Regular price | |
| Dec 31, 2022 to Jan 27, 202328 days, checked 0x | $19.99 | $16.99 | Regular price |
| Dec 16, 2022 to Dec 30, 202215 days, checked 1x | $19.99 | Regular price | |
| Dec 3, 2022 to Dec 15, 202213 days, checked 0x | $21.99 | Regular price | |
| Nov 5, 2022 to Dec 2, 202228 days, checked 0x | $21.99 | $16.99 | Regular price |
| Oct 14, 2022 to Nov 4, 202222 days, checked 1x | $21.99 | Regular price | |
| Sep 17, 2022 to Oct 13, 202227 days, checked 1x | $18.9914% off | Sale price | |
| Jul 9, 2022 to Sep 16, 202270 days, checked 1x | $21.99 | Regular price | |
| Jun 6, 2022 to Jul 8, 202233 days, checked 1x | $19.999% off | Sale price | |
| Jun 5, 20221 day, checked 1x | $21.99 | Regular price |
Tracking since Oct 17, 2026. Last checked Oct 24, 2026.