Air and Fuel› Superchargers, Turbochargers and Components

ISR

RS3871 Turbo Kit w/ V2 Bottom Mount Manifold

$2,475.00

SKU: IS-TurboKitKAT

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Overview

The ISR Performance IS-TurboKitKAT is a turbocharger upgrade kit designed for the 1991-1998 Nissan 240SX with the KA24DE engine. This kit provides a forced induction solution for enhanced performance.
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The ISR Performance 1991-1998 Nissan 240SX KA24DE Upgrade Turbo Kit offers an affordable solution for boosting the power of the KA24DE engine. This kit is built around the ISR Performance RS3871 Turbo, capable of supporting up to approximately 380hp. It includes essential components such as the ISR Performance V2 KA24DE Bottom Mount Turbo Manifold, Turbine O2 Housing, Downpipe, Intake Kit, and a KA-T Front Mount Intercooler Kit. While this kit provides the core components for a turbo upgrade, it is not 100% complete. Buyers will need to source and install their own oil feed and drain lines, as ISR Performance does not currently offer a specific line kit for the KA. Additionally, if a blow-off valve (BOV) is desired, the S13 SR20DET Hotpipe and BOV Flange made by ISR are required. The kit does not include a BOV flange by default, but one can be added upon request. Installation of this bottom-mount turbo kit may require modifications. The downpipe may come very close to the floorboard, necessitating either clearancing of the downpipe and floorboard or the use of Xcessive KA lowering brackets. Furthermore, the kit requires additional supporting modifications, including a Z32 MAF, upgraded injectors, and a custom ROM tune to ensure proper operation and performance. Users should also be aware that the RS3871 turbo is rated to ~380hp and requires tuning, injectors, and a MAF, among other components.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandISR
Part NumberIS-TurboKitKAT
CategoryAir and Fuel
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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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