Used Engine Wiring Harness From Japan: SR20DET and 1JZ Prices (2026)

Yes, you can buy a used engine wiring harness for an SR20DET Silvia, 180SX or a 1JZ-GTE Chaser from Japan, and they sell every week. On Yahoo! Auctions Japan, 29 SR20DET turbo engine harnesses sold for ¥5,500 to ¥79,980 and 22 1JZ-GTE engine harnesses sold for ¥5,250 to ¥125,000 in closed listings ending 1 May to 21 October 2026. We read these listings and every sale page on 22 October 2026; dollar figures use ¥160 to $1, and prices exclude proxy fees, freight and import tax.

A wiring harness (ハーネス, hānesu) is the bundle of wires and connectors that links the engine, the ECU and the rest of the car. Japanese yafuoku (ヤフオク, the nickname for Yahoo! Auctions) sellers split it three ways: the engine harness (エンジンハーネス), the body or cabin harness (室内ハーネス or ボディハーネス), and the confusing メインハーネス (main harness), which some sellers use for the engine side and others for the cabin side.

What does a used Silvia or 180SX harness sell for?

We counted only listings that sold with at least one bid. The table covers standalone harnesses, not engines or ECUs sold with one.

The spread inside the SR20DET row comes from condition, not chassis. A 180SX black top harness with a broken fuse box cover and a cut wire sold for ¥5,500, while harnesses described as tested and unmodified (動作確認済, dōsa kakunin-zumi, “working when checked”) sat at the top. One S15 Spec R seller listed the engine room, cabin, both door and fuel tank harnesses as a set, and it sold for ¥55,555.

We left out complete engines with a harness attached, ignition coil, injector and knock sensor sub-harnesses, Audi R8 coil conversion kits, starter and alternator harnesses, door, tail lamp, meter and air-con harnesses, CA18DET harnesses, a two-car lot, and listings that named both CA18 and SR20. For what an engine with its harness costs, see our used SR20, 1JZ and 2JZ engine prices.

What about 1JZ and 2JZ harnesses?

JZX100 harnesses cost more than anything on the Nissan side. The 5 described as coming from a manual car sold for ¥50,000 to ¥125,000, and one listed as unused genuine for the JZX90 sold for ¥42,500. Two JZX100 sellers said the loom was surplus because the car was being rewired, one of them for a standalone ECU (フルコン, furu-kon).

No standalone 2JZ-GTE engine harness sold in the searches we read. Every 2JZ listing with a harness was a complete engine or an ECU bundle. A search for スワップハーネス (swap harness) returned Lexus lighting kits and scooter looms, and no SR20 or JZ engine-swap harness sold under that name.

Engine, body or ECU harness: which one do you need?

For a straight replacement, you want the engine harness from the same engine, gearbox and year. Sellers flag the difference between SR20DET red top (赤ヘッド, aka-heddo) and black top (黒ヘッド, kuro-heddo) harnesses, and between 1JZ-GTE with and without VVT-i. We report what sellers state; fitment to your car is for the harness maker’s part number or your builder to decide. If you are going standalone ECU, many builders only need the plugs, and a cheap harness sold as junk (ジャンク, janku: sold as-is, untested) can still give you genuine connectors.

Why is buying a harness from overseas hard?

None of the 99 sale pages had Yahoo!‘s overseas delivery option switched on, and none mentioned overseas buyers at all. Three listings from one seller said people who cannot communicate in Japanese should not bid. 27 were sold ノークレーム・ノーリターン (no claims, no returns), 13 shipped freight-collect (着払い, chakubarai), and 9 offered local pickup as an option. None was pickup-only, and one title said delivery to a private address was fine.

Condition is the real gap. 16 descriptions mentioned cracked, broken or missing connectors, 19 mentioned modification (加工, kakō) such as spliced-in wires, and 6 mentioned cut or torn wires. Only 17 said the harness was working when removed, and 8 said nobody had tested it. A photo of a coiled loom cannot show a corroded pin, a hidden splice or a wire broken inside its insulation. Checking that by continuity test before you pay, and asking the seller follow-up questions in Japanese, is the step you cannot do from abroad.

What should the photos and video show?

What does each route cost?

A harness is light and folds up. Sellers quoted 140 and 180 size boxes (length, width and height added up in cm), and Japan Post’s EMS limits, checked on 22 October 2026, allow a 1.5 m maximum length and 30 kg to the United States, United Kingdom and Canada, and 1.05 m and 20 kg to Australia. When a seller only offers collection, the pickup-only parts guide covers your options, and if the harness comes with an engine, the used engine shipping guide covers the rest. Prices for other parts are in the monthly JDM drift parts price index.

Once the car is wired and running, the Japan drift tracks directory lists the circuits and what each one allows.