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JRready 4 Pin Molex Connector Mini-Fit Jr Connector Kit 4.2mm 5559Series 39-01-3049 39-01-2045 Receptacle Plug with Pins Sockets 18-24AWG 6 Complete Set ACTCRH6A09
JRready

JRready 4 Pin Molex Connector Mini-Fit Jr Connector Kit 4.2mm 5559Series 39-01-3049 39-01-2045 Receptacle Plug with Pins Sockets 18-24AWG 6 Complete Set ACTCRH6A09

Bottom line: The JRready 4 Pin Molex Connector Mini-Fit Jr Connector Kit 4.2mm is a specs-and-price decision rather than a crowd-consensus one in the power supplies & cables category. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ Backed by JRready's warranty and support channels

Cons

  • ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
  • ✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated

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SpecPicks Verdict

SpecPicks scored JRready 4 Pin Molex Connector Mini-Fit Jr Connector Kit 4.2mm… using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies & cables category. JRready's power supplies & cables lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for power supplies & cables of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • Package List: Includes 6 pairs of male and female 4 pin housing connectors , pin and socket terminals (30 pairs), total 72PCS per set, suitable for wire harness assembly, repair, and DIY electrical projects.
  • 4.2mm Standard: Designed for Mini-Fit Jr 4.2mm pitch system, ensuring stable high-current performance for industrial and automotive use.
  • Secure Locking Design: Latch design provides a tight, vibration-resistant connection that prevents accidental disconnection in demanding operating environments.
  • PA66 Housing: Made from premium PA66 nylon with excellent insulation, flame resistance, and heat tolerance from -40°C to 105°C, suitable for harsh electrical conditions.
  • High-Conductivity Terminals: Tin-plated brass contacts deliver low resistance, strong corrosion resistance, and reliable conductivity. Supports 18–24 AWG wire and up to 9A current rating.
  • Compatibility Assurance: Compatible with standard Mini Fit Jr. connectors and terminals. Compatible Molex equivalents include: Housing: 39-01-3029/39-01-2025; Pin: 39-00-0040/39-00-0041; Socket: 39-00-0038/39-00-0039.

Full Specifications

BrandJRready
ModelACTCRH6A09
MaterialNylon
TerminalButt Terminal
Unit Count72 Count
Part NumberACTCRH6A09
CompatibilityPC
Material TypeNylon
4.2mm StandardDesigned for Mini-Fit Jr 4.2mm pitch system, ensuring stable high-current performance for industrial and automotive use.
Connector TypeCrimp
Number of Items1
Connector GenderMale-to-Female
Contact MaterialBrass
Vibration/RumbleYes
Included ComponentsJRN011-HMA-2X02P-V0*6+JRN011-HF-2X02P-V0*6+JRN011-TPM-H*30+JRN011-TPF-H*30
Insulation MaterialNylon
Warranty DescriptionPlease contact us
Secure Locking DesignLatch design provides a tight, vibration-resistant connection that prevents accidental disconnection in demanding operating environments.
Insulation Material TypeNylon

Ready to buy?

JRready 4 Pin Molex Connector Mini-Fit Jr Connector Kit 4.2mm 5559Series 39-01-3049 39-01-2045 Receptacle Plug with Pins Sockets 18-24AWG 6 Complete Set ACTCRH6A09 is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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JRready 4 Pin Molex Connector Mini-Fit Jr Connector Kit 4.2mm 5559Series 39-01-3049 39-01-2045 Receptacle Plug with Pins Sockets 18-24AWG 6 Complete Set ACTCRH6A09
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