Sam's Muffler & Radiators has operated from 225 Beyer Way in Chula Vista's Otay district since 2001, specializing in exhaust fabrication, radiator rebuilding, and cooling-system overhauls. The shop's muffler-and-radiator focus covers custom exhaust bends, catalytic-converter replacement, and heater-core swaps that share diagnostic overlap with the transmission and drivetrain work at AAMCO Transmissions & Total Car Care in the same Chula Vista repair corridor. Radiator re-coring—removing the damaged core and soldering a new copper-brass or aluminum replacement into the original tanks—extends the service life of out-of-production units that no longer have aftermarket equivalents. Customers finishing a cooling-system overhaul or exhaust replacement often clean road grime and welding residue at Soapy Joe's Car Wash on Main Street before returning the vehicle to the owner. The highest-value fabrication jobs involve mandrel-bent stainless-steel exhaust systems with merge collectors and 3-inch downpipes welded to OEM flange specs for turbocharged truck and performance-car applications.