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Rocker Cover Gasket Compatible With Caterpillar 320D/320Dl 2007-2012 C6.6 6.6L 6-Cyl Diesel Rubber

B277-5063A1
OEM PART NUMBERS:
• Caterpillar: 277-5063 (Primary OEM)
• Perkins: 3681A059 (Perkins 1106D equivalent)

SPECIFICATIONS:
• Gasket Location: Rocker Cover
• Material: Rubber
• Type: Individual Gasket
• Condition: New

PRODUCT NOTICE:
As a parts distributor we mostly sell aftermarket parts (any OEM parts would be noted as such). Aftermarket parts are not sourced from the original vehicle or equipment manufacturer, but are designed to function the same as - if not better than - the original. All parts sold are new.

WARNING - This product may expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

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Description

CATERPILLAR EXCAVATORS:
• Caterpillar 320D/320DL C6.6 6.6L Diesel (2007-2012)

CATERPILLAR WHEEL LOADERS:
• Caterpillar 938H C6.6 6.6L Diesel (2007-2012)


IMPORTANT:
Cat 277-5063 is a rocker cover gasket for the Cat C6.6 (Perkins 1106D-E66TA) engine — specifically the earlier 2007-2012 production. Perkins equivalent is 3681A059. Do NOT confuse with Cat 309-6664 (Perkins 3681A065) which is the rocker cover gasket for later production of the same engine family. The gasket shape and bolt hole positions differ between early and late production — they are NOT interchangeable.

Failure symptoms: oil weeping from the rocker cover area, oil pooling on the exhaust manifold, burning oil smell from the engine compartment. The rubber gasket hardens over time from heat cycling. When replacing, inspect the cover for warping and clean both mating surfaces. Also check the rocker cover bolt grommets — worn grommets prevent proper sealing pressure. Cat C6.6 = Perkins 1106D-E66TA — Cat and Perkins part numbers are interchangeable.

⚠️ Cross-ref: Cat 277-5063 = Perkins 3681A059. Verify early (2007-2012) vs late production.

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  • Item Requires Shipping
  • 0.3 lbs.
  • W10.0000” x H1.0000” x L12.0000”
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