CATERPILLAR 123-2845 Plate 1232845

Caterpillar 129-3405 Liner – OEM-Grade Durability for 320B & 345B Excavators

The Caterpillar 129-3405 liner is a precision-engineered replacement part designed for a wide range of Caterpillar excavators, including models 6LS-320B FM LL, 1ES-320B L, 5GW-320B L, 6CR-320B L, 4XW-320B, 5BR-320B, AKJ-345B II, AKX-345B II, ALD-345B II, 3MW-345B L, 5WS-345B L, 2ZW-345B, and 6XS-345B. Manufactured to Caterpillar OEM specifications, this liner ensures optimal fit and function within the engine cylinder assembly, maintaining precise bore diameters and surface finish tolerances critical for efficient combustion and engine longevity.

Constructed from high-grade metallurgy, the 129-3405 liner offers superior resistance to wear, thermal stress, and corrosion under demanding load conditions typical of heavy-duty excavation work. Its robust design enhances the drivetrain’s performance by maintaining compression integrity and reducing friction, which translates into improved fuel efficiency and reduced maintenance downtime. Ideal for heavy equipment operators seeking reliable spare parts, this liner supports sustained engine performance and extends the service life of your Caterpillar machinery.

🔗 For genuine Caterpillar 129-3405 liners and detailed specifications, visit the official product page at Caterpillar 129-3405 Liner on AllParts Expert. Ensure your excavator operates at peak efficiency with OEM-quality replacement parts tailored for 320B and 345B series models.