Timing Gear Cover Gasket Compatible With Caterpillar Th220b/Th330b/Th340b/Th350b 2005-2014 C4.4/C6.6

CATERPILLAR BACKHOE LOADERS:
• Caterpillar 414E/416D/416E/420D/420E/422E 3054C/C4.4 4.4L Diesel (1999-2014)

CATERPILLAR EXCAVATORS:
• Caterpillar 312D2/313D2 C4.4 4.4L Diesel (2010-2017)

CATERPILLAR TELEHANDLERS:
• Caterpillar TH220B/TH330B/TH340B/TH350B/TH355B/TH360B 3054E/C4.4 4.4L Diesel (2005-2014)

CATERPILLAR WHEEL LOADERS:
• Caterpillar 914G/IT14G/IT14G2 3054C/C4.4 4.4L Diesel (2001-2012)

CATERPILLAR MOTOR GRADERS:
• Caterpillar 120M/12M C6.6 6.6L Diesel (2007-2014)

CATERPILLAR TRACK LOADERS:
• Caterpillar 953D/963D C6.6 6.6L Diesel (2005-2012)


IMPORTANT:
Cat 225-8287 is the same gasket as Perkins 3681P046 — same part, different branding. This timing gear cover gasket fits Cat C4.4 and C6.6 engines, which are Perkins 1104/1106 series built under Caterpillar branding. Covers the earlier 3054C/3054E era machines as well. The timing cover uses multiple gaskets — this is one piece of the set. Verify which specific timing cover gasket your engine needs by matching the part number, not just the engine model.

Failure symptoms: oil weeping from the timing cover area at the front of the engine. When replacing, inspect the front crankshaft oil seal and replace if needed — the labor overlaps. Clean all old gasket material from the cover and block surfaces.

⚠️ Cross-ref: Cat 225-8287 = Perkins 3681P046. Verify by engine serial number.