Valve Spring + Retainer Kit CATCAMS Honda D16A9 D16Z5 1.6 16v - 16 Valves

This spring and retainer kit from CATCAMS brings together the valve train specified by Cat Cams for all 16 valves of the Honda D16A9 / D16Z5 engine, under a single part number.

Kit contents

• 16× CATCAMS PAC-S90015 valve springs
• 16× CATCAMS 99412 upper retainers
• 8× CATCAMS 99538/O intake lower retainers
• 8× CATCAMS 99539/O exhaust lower retainers

PAC-S90015 spring specifications

• Outside diameter: 25.4 mm
• Wire diameter: 3.6 mm
• Free length: 46.2 mm
• Solid length: 22.9 mm
• Fitted load: 31 kg at 37.5 mm
• Maximum load: 79 kg at 12.5 mm lift

99412 upper retainer specifications

• Spring seat diameter: 18.0 mm
• Top diameter: 25.0 mm
• Top height: 3.5 mm

99538/O intake lower retainer specifications

• Overall diameter: 24.0 mm
• Spring seat diameter: 18.2 mm
• Inside diameter: 12.2 mm
• Overall height: 6.0 mm
• Spring seat height: 3.0 mm

99539/O exhaust lower retainer specifications

• Overall diameter: 24.0 mm
• Spring seat diameter: 18.2 mm
• Inside diameter: 12.2 mm
• Overall height: 5.0 mm
• Spring seat height: 1.6 mm

Engine applications

• Honda D16A9 / D16Z5 1.6 16v DOHC, 4-cylinder, 1590 cc
• Engine codes: D16A9, D16Z5

Valve train configuration specified by Cat Cams

• Upper retainer: 99412, intake and exhaust
• Intake lower retainer: 99538/O
• Exhaust lower retainer: 99539/O
• Outer spring: PAC-S90015
• Inner spring: none
• Valves, valve locks, followers and valve lash: O.E.M.

Cat Cams fitting recommendations

• Check that the distance between valve seal and retainer is at least 0.6 mm at full lift
• Use "GOLD quality" springs for applications over 12.5 mm valve lift or 8,500 rpm

CATCAMS expertise in camshafts and their accessories (valve springs, mechanical lifters, adjustable pulleys and more) has been recognised worldwide for many years, built on craftsmanship and precise study of engines and applications. Every camshaft profile and spring rate has been developed according to the specific features of each engine and to its intended use (road, sport, rally, drag, circuit and more).

Depending on the model, Catcams spring retainers are made of steel or aluminium.

Image for illustration only