For 1990-2009 cars

### Measurement

1. Remove the cylinder head cover. Refer to Valve Rocker Arm Cover Replacement.
2. Rotate the crankshaft pulley clockwise.
3. Align the notches (1) between the pulley and the cover.
4. Measure the valve clearance (2) and (6). Rotate the crankshaft pulley clockwise through 180 degrees.
5. Measure the valve clearance (3) and (7). Rotate the crankshaft pulley clockwise through 180 degrees.
6. Measure the valve clearance (4) and (8). Rotate the crankshaft pulley clockwise through 180 degrees.
7. Measure the valve clearance (1) and (5). Rotate the crankshaft pulley clockwise through 180 degrees.
8. If the measured values are out-of-specifications, replace the new valve tappets.

Specifications

• | Intake Side: 0.21-0.29 mm (Nominal Value: 0.25 mm)

• | Exhaust Side: 0.27-0.35 mm (Nominal Value: 0.30 mm)

9. Determine the tappet size. Refer to Valve Clearance Determine Tappet Size.
10. Replace the valve tappets if necessary.

### Determine Replacement Size Tappet

1. Remove the old tappet.
2. Locate the ID number inside old tappet.
3. Locate the ID number in the following table and record the value.
4. Perform the following calculation to determine the replacement tappet size.

Value (old tappet) + Measured Clearance - Nominal Value = X (new tappet)

Example:

• | ID of old tappet = 20 = 3.20 mm and clearance was 0.31 mm

• | 3.20 mm + 0.31 mm - 0.25 mm = 3.265 mm

• | 3.265 mm (value) = 27X (ID number) = 55353766 (part number)

#### Tappet Selection

Part Number | ID Number | Value (mm)
--- | --- | ---
24465260 | 04 | 3.060-3.050
24465261 | 06 | 3.050-3.070
24438041 | 08 | 3.070-3.090
24438145 | 10 | 3.090-3.110
24438146 | 12 | 3.110-3.130
24438147 | 14 | 3.130-3.150
24438148 | 16 | 3.150-3.170
24438149 | 18 | 3.170-3.190
24438150 | 20 | 3.190-3.210
24438151 | 22 | 3.210-3.230
55353764 | 24X | 3.230-3.244
55353765 | 25X | 3.244-3.258
55353766 | 27X | 3.258-3.272
55353767 | 28X | 3.272-3.286
55353768 | 30X | 3.286-3.300
55353769 | 31X | 3.300-3.314
55353770 | 32X | 3.314-3.328
55353771 | 34X | 3.328-3.342
55353772 | 35X | 3.342-3.356
55353773 | 36X | 3.356-3.370
55353774 | 38X | 3.370-3.384
55353775 | 39X | 3.384-3.398
55353776 | 41X | 3.398-3.412
55353777 | 42X | 3.412-3.426
55353778 | 43X | 3.426-3.440
55353779 | 45 | 3.440-3.460
55353780 | 47 | 3.460-3.480
55353781 | 49 | 3.480-3.500
55353782 | 51 | 3.500-3.520
55353783 | 53 | 3.520-3.540
55353784 | 55 | 3.540-3.560
55353785 | 57 | 3.560-3.580
55353786 | 59 | 3.580-3.600