Peak & Hold 4A/1A Driver
SKU: 83930822144

Peak & Hold 4A/1A Driver

Sale price$155.25 Regular price$172.50
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Ships within 48 hours · Estimated delivery Jul 8 - Jul 13

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Description

Peak & Hold 4A/1A DriverDescription Downloads 4 channel low impedance injectors driver unit. Peak and Hold Manual Features Current control driver for low impedance injectors 4 channels Available in three current versions: 8A 2A 4A 1A 2A 0. 5A Technical Description Peak and Hold 8A 2A Controls up to 4 injectors with impedance below 1. 5 ohm 16 Bosch 160lb h (1600cc) injectors (4 per channel) 8 Siemens low impedance injectors (2 per channel) 4 MSD low impedance injectors (2

Features

  • Current control driver for low impedance injectors
  • 4 channels
  • Available in three current versions:
    8A/2A
    4A/1A 
    2A/0.5A

Technical Description


Peak and Hold 8A/2A
  • Controls up to 4 injectors with impedance below 1.5 ohm
  • 16 Bosch 160lb/h (1600cc) injectors (4 per channel)
  • 8 Siemens low impedance injectors (2 per channel)
  • 4 MSD low impedance injectors (2 per channel) (with 2 ohms impedance per injector)
Peak and Hold 4A/1A
  • Controls up to 4 injectors with 1.5 to 3 ohms of impedance
  • 8 Bosch 160lb/h (1600cc) injectors (2 per channel)
  • 4 Siemens 83lb/h injectors
  • 4 MSD injectors (with 2 ohms impedance per injector)
Peak and Hold 2A/0.5A
  • Controls up to 4 injectors with 3 to 7 ohms of impedance
  • 4 Bosch 160lb/h (1600cc) injectors

Dimensions: 115 x 90 x 33mm

To determine which Peak & Hold you need

  1. Grab a multi-meter and select Ohms 200
  2. Touch the positive and negative leads of multi-meter together to measure resistance (record this number...i.e. measured 0.3)
  3. Then take the positive and negative leads from multi-meter and put on each terminal of the injector. Doesn't matter the order. Record this measurement
  4. Take the ohms measurement from Step 3 and then subtract the number you got in Step 2 (i.e. Step 3 4.8ohms - Step 2 0.3ohms = Total 4.5ohms)

High Impedance Injectors - Above 7ohms - No Peak and Hold Boxes are needed.
Peak and Hold 2A - 3ohms to 7ohms (Bosch 160lb/hr).
Peak and Hold 4A - Below 3ohms to 1.5ohms.
Peak and Hold 8A - Below 1.5ohms (Billet Atomizer*).
All low impedance Billet Atomizer Injectors manufactured after Nov. 2012 require 8A regardless of measured resistance.

*Billet Atomizer Injectors - Anything prior to serial # C300**** should only use the 4A/1A. This only applies to injectors manufactured prior to Nov. 2012.

Contents of Packaging

  • 1 Peak and Hold 4A/1A
  • 1 Operation and installation guide
  • 1 mounting kit (4 rubber mounts, 4 washers and 4 ¼” nuts)
  • 6ft Peak and Hold unterminated harness (optional)
  • 1 FuelTech black carbon fiber sticker

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 83930822144

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Susan F. Montville
Carnegie, US
★★★★★ 5
Easy to do it yourself and save!
Size: 8.8" x 9.3" x 1.2"
One place wanted $85 to replace this! Another wanted $50! I ordered this for $10, watched a YouTube video and did it myself! Super easy!
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Reviewed in the United States on May 10, 2026
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T. N.
Natrona Heights, US
★★★★★ 5
Buy it, worth it.
Size: 8.8" x 9.3" x 1.2"
Good quality product. Easy to use and install. Worth the money.
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Reviewed in the United States on January 20, 2026
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victor
West Palm Beach, US
★★★★★ 5
It fits perfectly—no problems at all.
Size: 2017-2025 FD-4625 & FL2124S Fuel Filter Set
Everything is great. Thank you.
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Reviewed in the United States on April 6, 2026
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Dannah N.
Charlottesville, US
★★★★★ 5
Fits!
Size: 2017-2025 FD-4625 & FL2124S Fuel Filter Set
Everything fit and seems to be working good!
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Reviewed in the United States on May 11, 2026
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Verified Purchase
Guillermo L.
Grantham, US
★★★★★ 5
Good filter kit
Size: 2017-2025 FD-4625 & FL2124S Fuel Filter Set
Been using this parts since 2 years ago. Never have any issues. I recommend it.
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Reviewed in the United States on February 23, 2026

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