Generator sets require exact weight-calibrated isolation. If the rubber is too hard for the weight of the engine and alternator, it will fail to damp any frequencies, transferring all vibration straight to the base frame. If the rubber is too soft, the heavy weight will compress it completely, destroying its elasticity and causing rapid alignment failures.

Standard low-grade rubber compounds are highly susceptible to petroleum contamination. When engine oil or diesel fuel drips onto an unprotected alternative copy mount, the rubber absorbs the fluid, causing it to swell up, turn spongy, and lose its structural strength. Sourcing authentic factory mounts ensures high resistance to oil splash degradation.

Yes, you must always replace the complete set of engine or alternator mountings simultaneously. If you install a single new mount alongside older, partially collapsed mounts, the new rubber block will sit higher and carry an unequal share of the machinery weight, causing it to fail rapidly due to excessive structural load.