These can help prolong the lift of the rubber mounts under your air cleaner housing
These steel cupped heat shields go under the rubber mounts to help deflect heat and grease away. In most cases (unless your engine is severely shaking) they will prolong the life of the rubber mounts. These shields attach to the T-shaped bracket this is mounted on the intake manifold of most 5 cylinder turbo diesel engines.
617 Turbo Diesel Air Cleaner Rubber Mount Heat Shields ( Set of 3 )
$13.95
SKU:
DSL-MOUNTSHIELD 
Product Details
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$168.00
617 Turbo Diesel Air Cleaner Thick Heavy Duty Bracket Installation Kit
VERY MINIMAL STOCK LEFT -- NO LONGER IN PRODUCTION
For 1978 to 1984 turbo model 300SD 300D 300CD and 300TD (some 85 models)
$18.75
Turbo Diesel Air Filter Housing Rubber Mount Repair Kit
Fits 116 123 and 126 Turbo 300DT 300CD 300TD 300SD
FITS THE FOLLOWING: 116,123,126, 5 cylinder turbo diesels with an air filter on the engine, from 1978 to 1985.