ISR Performance - Nissan 240SX KA24DE RWD Turbo line kit - Bottom mount

Our turbo line kit for the 240SX KA24DE running a bottom-mount setup. Same oil, coolant, and drain hardware as our top-mount kit, with routing tuned for bottom-mount manifold positioning. Built to drop directly onto ISR journal bearing turbos with their pre-fitted 3AN adapters.

What It Does

Provides the oil and coolant lines, fittings, distribution block, and drain hardware to support a bottom-mount turbo install on the KA24DE. Oil feed routes from an existing port in the factory oil filter housing to the turbo via a 3AN line. The coolant distribution block supplies coolant to the turbo and returns it to another factory port on the block. The oil drain runs through a 10AN GT drain flange to the supplied 10AN steel weld-on bung for your oil pan.

Fitment

Fits the Nissan 240SX (S13 and S14) with the KA24DE engine, RWD, in a bottom-mount turbo configuration. Directly compatible with ISR journal bearing turbos that have pre-fitted 3AN adapters. Works with many other turbochargers as well, but does not supply a turbo-specific 3AN fitting adapter for those.

What's in the Box

• 3AN oil feed line
• 10AN oil return hose
• BSPT / NPT oil block adapter
• Coolant distribution block and fittings
• 6AN coolant feed line
• 6AN coolant return line
• 1/4 BSPT to 6AN adapter fitting
• 10AN steel weld-on bung
• 10AN GT drain flange

Installation Notes

Given the age and miles on most KA24DE engines, clean the factory oil and coolant ports thoroughly before connecting the new lines. Built-up debris, burnt oil, or corrosion in those passages can restrict fluid flow or push debris into the turbo, which will cost you a turbo. Take the extra hour to do this right.

Product Details

Brand: ISR Performance

Part Number: IS-KATLKIT-BM

Type: Turbo Line Kit, Bottom Mount

Vehicle Fitment: Nissan 240SX (S13, S14) with KA24DE, RWD

Mount Style: Bottom mount

Turbo Compatibility: Directly fits ISR journal bearing turbos with pre-fitted 3AN adapters; other turbos may need adapter sourcing

Sold: As a complete kit

Related: IS-KATLKIT-TM for top-mount turbo configurations on the same engine

Legality: Off-road and competition use only