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CS144 Alternator Swap Harness 1996–2002 Toyota 4Runner (5VZ-FE & 3RZ-FE)

Name: CS144 Alternator Swap Harness 1996–2002 Toyota 4Runner (5VZ-FE & 3RZ-FE)
Brand: TEQ Offroad
SKU: sku-43039067865206
Availability: InStock

$19.83 USD $34.99

TEQ Offroad | SKU: sku-43039067865206

Limited Life Time Warranty

We stand behind our products. Because of this, we now offer a limited lifetime warranty against manufacturing defects, to give you peace of mind. *Check Terms and Conditions.

Third Party Lead Times

THIRD PARTY PRODUCTS

Xtrusion Overland started supplying various brands that go hand in hand with our own products, to provide a complete service and help us grow. This includes products that are drop shipped. Please be advised that availability and lead times of those product are solely impacted by the third-party vendor's schedule. Many products are sold under an open inventory method, as the technology to sync inventories is limited, therefore please reach out if a specific product is needed by a specific date for us to double check with the supplier for you!

Any potential delay that occurs in the sourcing, processing, or drop shipment at the third party level will be communicated to the best of our ability to the customer.

ESTIMATED DATE | LEAD TIMES

The estimated lead time provided when you placed your order is JUST AN ESTIMATE. It is not a guarantee that the product will be shipped on that date. The estimated lead time gives you some sense of what the current times to source, cut, pack and ship takes. Many times the lead time can be shorter, but likewise it can extend, depending on factors such as previous demand and current supply. We manufacture many components in house, but extenuating circumstances such as down time for maintenance or unscheduled downtimes for repairs might impact dates as well as delays related to our sourced components. There is a constant flow of parts and shipments, and sometimes the visibility becomes a challenge to pinpoint exactly when your product will ship.

Feel free to check on your order at any time. Be aware that our customer service team may not be able to give you an exact date for completion but rest assured we are tracking your order and it will be built in the order that it was received.

Xtrusion Overland also reserves the right to cancel items from an order, offer an alternative substitution or issue refund accordingly when product is delayed at an unacceptable time frame or at the request of the customer.

Description

If you’re upgrading your 3rd gen 4Runner to a CS144 high-output alternator, this is the harness that makes the swap clean, simple, and reliable.

The factory alternator wiring on the 1996–2002 4Runner uses a Toyota 3-pin connector (IG–S–L). Most CS144 alternators use a GM-style regulator plug, which means cutting, splicing, or building your own wiring. This plug-and-play CS144 adapter harness eliminates the guesswork and lets you connect your new high-output alternator the right way.

Whether you’re running a winch, dual batteries, off-road lighting, onboard air, or a full overland setup, a CS144 swap is one of the best electrical upgrades you can make to a 3rd gen. This harness keeps the install clean and factory-looking — no hacked wiring under the hood.

In house harness by TEQ Offroad for Toyota owners who actually use their trucks. Retro yellow-orange-red wiring as a hat tip to the Toyota heritage!

Features

Plug-and-play CS144 alternator adapter harness
Converts Toyota 3-pin (IG–S–L) to GM CS144 regulator connector
No cutting or splicing required
Clean, factory-style installation
Designed for reliability in off-road and high-vibration environments
Perfect for high-output alternator upgrades (140–200+ amps)

Vehicle Fitment

1996–2002 Toyota 4Runner (3rd Gen)
5VZ-FE 3.4L V6
3RZ-FE 2.7L 4-cylinder
Requires factory 3-pin Denso alternator connector
Also Fits 1st gen Tacoma and 80 Series Land Cruisers!

Note: This harness handles the wiring portion of the CS144 swap. Mounting brackets and pulley alignment modifications may vary depending on your engine and alternator configuration.

Why Upgrade to a CS144?

The stock 3rd gen alternator is only 70–80 amps. Once you add modern accessories, it struggles to keep up — especially at idle.

A CS144 provides:

Higher output at idle
Support for winches and dual battery systems
Stable voltage for lights, compressors, and overland gear
Proven reliability in demanding off-road builds

Built for Toyota Owners Who Love Offroading

At TEQ Offroad, we design parts the way we’d want them on our own rigs — simple, durable, and made to work the first time. No shortcuts. No unnecessary complexity. Just a clean solution for a common 3rd gen 4runner upgrade.