4 650cc fit Denso Top Feed Fuel Injectors If you are looking for top feed injectors for your Mazda these are the best! Fitment details - Overall Length: 75mm - O-ring seat to seat Dimension: 50mm - O-ring centerline to centerline Dimension: 55mm Specifications: - Genuine KSM Motorsports Part - Direct fitment to top feed fuel rail. - 650cc flow rate at 3 bar. - Flow matched 4 piece set. - 12 Month Warranty. - High Impedance.