10 Exhaust Header / Manifold Gaskets. Remflex 3029 5 Pairs Performance Exhaust Header/Manifold Gasket SBF Graphite. Brand new · Remflex Exhaust Gaskets · Part number 3029 · UPC 878891001105. Exhaust Gasket Set - SBF 289-351W w/Square Ports. 22.05 x 5.1 x 0.55 in (56.0 x 13.0 x 1.4 cm). 0.395 lb (0.18 kg). 1.98 lb (0.90 kg). Message us any time for fitment or order questions.