We have been using Supertech valves in our race program for many years. We even use them in our Endurance Engines for the 25 Hours of Thunderhill and
Supertech BMW E30 M3 S14 Valve Kit - 16 Pieces
Ventildeckel Schrauben Edelstahl BMW E30 S14 320is + M3 - Seyfang-Kfz
Ventildeckel Schrauben Edelstahl BMW E30 S14 320is + M3 - Seyfang-Kfz
Ventildeckel Schrauben Edelstahl BMW E30 S14 320is + M3
Without it in place the air washes around the oil cooler instead of through it reducing performance.
BMW E30 M3 S14 Oil Cooler Air Duct Front Bumper Insert 1988-1991
Motor + Anbauteile
Motor + Anbauteile
Ventildeckel Schrauben Edelstahl BMW E30 S14 320is + M3 - Seyfang-Kfz
Genuine BMW Euro E30 M3 Evo Front Bumper Gasket - 51112233055
BMW S14 Valve Cover Cylinder Head Cover M3 E30 for sale online
Bimmerforums - The Ultimate BMW Forum
BMW E30 M3 S14 S14B23 S14B20 S14B25 Engine Intake Manifold Plenum. Condition is Used.
BMW E30 M3 S14 S14B23 S14B20 S14B25 Engine Intake Manifold Plenum
BMW S14 M3 E30 SCHRICK Tassenstössel