VRSF E89 Z4 sDrive35i / 35is Intercooler Upgrade | 2009-16

This VRSF kit replaces the small factory intercooler on the N54-powered E89 Z4 sDrive35i and sDrive35is with a much larger bar-and-plate front mount. It comes with Z4-specific couplers and clamps, and it is offered in three cores so you can match it to a mild tune or a big-turbo build.

What It Does

The twin-turbo N54 gains a lot from a tune, but the Z4's factory intercooler heat soaks quickly at higher boost. Intake temperatures climb, the DME pulls timing, and power falls off just when you need it. A VRSF core holds temperatures down through repeated pulls, so the car makes steady power and has a better safety margin against knock.

Choosing a Core

The 5-inch Performance HD core is rated to about 550 whp and suits tuned stock-turbo cars. The 7.5-inch Competition HD is rated to about 850 whp, and the 7.5-inch Race HD to about 1,100 whp for upgraded turbos and E85.

Materials and Construction

Each core uses staggered, offset high-density fins with cast aluminum end tanks. Tabs keep the factory fan shroud in place, and extra mounting hardware adds support. Every unit is hand finished and pressure tested.

Features

• Three bar-and-plate core sizes
• Cast aluminum end tanks
• Z4-specific molded couplers
• Stainless steel T-bolt clamps
• Keeps the factory fan shroud
• Install in about 2.5 hours
• VRSF lifetime warranty and No Hassle fitment guarantee

What Is Included

• VRSF front mount intercooler in the size you choose
• Custom molded couplers for the Z4
• Stainless steel T-bolt clamps
• Mounting hardware

Required Parts

• None. The kit includes everything needed to replace the factory intercooler.

Specs

• Part numbers: 10903070 (5in Performance HD), 10903040 (7.5in Competition HD), 10903050 (7.5in Race HD)
• Brand: VRSF
• Core: aluminum bar and plate
• End tanks: cast aluminum
• Rated power: about 550 / 850 / 1,100 whp
• Shipping dimensions: 33 x 16 x 15 in (84 x 41 x 38 cm) for the 5in core; 34 x 16 x 15 in (86 x 41 x 38 cm) for the 7.5in Competition core; 36 x 16 x 15 in (91 x 41 x 38 cm) for the 7.5in Race core
• Shipping weight: 30 lb (13.6 kg) for the 5in core; 36 lb (16.3 kg) for the 7.5in Competition core; 45 lb (20.4 kg) for the 7.5in Race core

Fitment Notes

• The 5in core normally fits without trimming, though some cars need minor shroud trimming.
• The 7.5in cores need the black plastic shroud trimmed. The bumper never needs trimming.
• Fits left- and right-hand-drive cars.
• See more in our VRSF intercoolers collection.