Yak 52 Oil Hose, Oil Pump Scavenge to Oil Cooler , PN 4-16-410
This drop-in replacement hose runs from the Oil Pump outlet through a grommet in the firewall en route to the Oil Cooler under the Starboard Wing. Aft of the Firewall it connects to rigid tubing. Because diameter is important to pass through the firewall this hose has no fire sleeve but the laced leather wrap should be re-installed.
New Russian hose material meeting the factory specifications has been used, plus good-condition used Russian hose fittings.
This part should be installed on a Yak 52 with an M14-P series motor and standard factory equipment in the engine bay. No fitness for use should be assumed if this hose is installed on any other engine/airframe combination.
Fit this hose with confidence. Depending on airplane duty, Russian AD’s approved this hose material for use in service for between 7 to 9 years.
Once you've fitted this new hose, don't throw your old one away ! If the Original Russian hose fittings on your old hose are in good shape, please cut the ends off and ship them to us.
For each well cared-for RUSSIAN metric hose-end fitting, once received, inspected and deemed acceptable by us we'll send you an electronic refund (not to exceed $15 US per hose end) .
The blog has more details on our unambiguous accept / reject criteria.