CSR Modular FillerWhen it comes to cooling systems and engine swaps, many builders often run into issues with hose sizing. The engine they just swapped may have a water fitting that doesn't match the radiator, or perhaps the engine's hose fitting or radiator doesn't have a filler opening. The folks at CSR [www.csr-performance.com; (800) 226-1274] have solved these problems with their new modular inline filler assembly. The inline filler, first and foremost, gives you a location to fill your cooling system-which should be the highest point in your system-but also allows you to mix and match hose diameters or utilize AN hose attachments. Just order the inlet and outlet fitting your setup requires and you'll be off and running in no time flat.