The all new Chase Bays Tucked Radiator for BMW is finally here! It’s designed to free up space inBMW engine bays, improve cooling performance & Aesthetics. This radiator is a cooling upgrade,with more fluid capacity than stock, more direct airflow,&dual pass design. It’s mounted under the core support to open up to 6″ of space.

We’ve designed this all aluminum radiator to fill every bit of space under the core support while still being able to run 16″ electric fan. Requires some light cutting of front core support. More mod info below.We’ve integrated features no other competitor is offering. From fan sizing to modularity.

Fill Point

Top of our radiator sits 6″ lower than stock, so you have to make a new fill point. The 1st step is an inline filler neck.

Proper filler neck setup makes hose selection easier. We recommend on radiator itselfw/Raised Inline Filler Neck. (see photo) Select -20AN for 1 side of Filler Neckunder options,other side will be hoses you choose. If you’re usingOE Push-On style Silicone Hoses, you’d select “1.5mm Normal Hose” for1 option & “-20AN” for other. The -20AN side will thread right into the radiator thentwist the filler neck onto that. W/ the thick O-Ring Seal on both sides, getting the filler neck 0 vertical is easy w/ adjustment of both sides.Other option is putting it on upper water neck whichrequires somefab work.

Modular Inlet/Outlet & Reversible Orientation

Radiator was designed to be reversible w/ interchangeable inlet/outlet types.The radiator inlet/outlet have to be on the same side b/c of the dual pass design. It looks the same on top & bottom& brackets are centered.

The inlet/outlet are -20AN female threads.Just installthe adapters you need. If you change your mind later, Justthreadon new adapters. We offer OE style in 1.38″, -16AN,&-20AN. We recommend youput radiatorinlet/outletcloser to upper water neck since that hose is more visible

Dual Pass Design

Coolant passes through TWO times instead of ONE for TWICE the coolingat half the size. Both inlets are on the same side of the radiator & a plate is welded inside b/wthe2 inlets. The radiator has2 L brackets on each side that bolt to your core support. This radiator doesn’t use any OEM radiator mounting points.

Pressure Tested

Each radiator is water pressure tested to 40psi. Your radiator shouldnt see more than 16-19psi before the radiator cap spring does its job & expands into the overflow.

Dimensions
22″ Wide x 17″ Tall x 3.5″ Thick (3″ Core)

Due to the BMW Radiator being smaller than our Nissan offering, generally anything over 450hp will need a larger radiator.

Chassis Mods

E30 lower bar has to becut (see photos) & hood latch has to be removed plus surrounding hood latch metal trimmed. The lower bar isn’t structural.

E36slight trim to the upper grille valence on left & right side.

E46 requires no trimming at all.

Youcant run AC w/ this radiator since it takes its place. You could custom fabricate a forward mounted condenser & extended lines.

An intercooler can work w/ some metal valance trimming on the E30.For the E36 & E46 light bumper trimming