If you’re servicing the air conditioning (AC) or heat pump system
of your Tesla Model Y—whether for routine maintenance or to fix
issues like reduced cooling efficiency, AC “freezing,” or unusual
moisture-related noises—this CFN 265mm automotive desiccant
(matching part GZP0283) is the critical component to protect your
vehicle’s refrigerant system. As an OEM-spec replacement, it’s
engineered to match the Model Y’s AC accumulator dimensions and
moisture-absorbing capacity, ensuring it traps excess humidity in
the refrigerant loop and preserves the system’s performance.
Tesla Model Y’s AC and heat pump systems rely on a dry refrigerant loop to function: even tiny amounts of moisture in the system can cause
major problems—when combined with refrigerant, moisture forms
corrosive acids that damage AC compressors, valves, and hoses; at
low temperatures, it freezes into ice, blocking refrigerant flow
and killing cooling/heating performance. This 265mm desiccant acts
as a “moisture filter”: it’s installed inside the Model Y’s AC
accumulator (the component that separates liquid and gaseous
refrigerant) and absorbs humidity from the loop, keeping the system
dry and protected.
Unlike generic desiccants that are too small (or lack absorption
capacity), this CFN part is tailored to Model Y’s needs: its 265mm
length fits perfectly into the factory accumulator, and its
high-grade molecular sieve (the core moisture-absorbing material)
can hold up to 20% of its weight in water—matching the OEM
desiccant’s efficiency. It also avoids “dusting” (a common issue
with cheap desiccants, where small particles break off and clog the
system), ensuring no debris damages your Model Y’s expensive AC
components.
Desiccants in EV AC systems face unique demands (exposure to
refrigerant, temperature swings from -40°C to 80°C), so this CFN
part is engineered for long-lasting performance:
- Core Material: Premium 3A molecular sieve (the same type Tesla uses
OEM)—chemically stable, non-toxic, and resistant to breakdown from
refrigerant (R1234yf, the type Model Y uses). It won’t leach
contaminants into the system or lose absorption capacity
prematurely.
- Protective Casing: A breathable, refrigerant-resistant mesh bag (sealed at both
ends) holds the molecular sieve in place—preventing particle loss
while letting refrigerant and moisture flow through for absorption.
The 265mm length is precision-cut to fit the Model Y’s accumulator
without folding or jamming (a common issue with ill-fitting
desiccants).
- Maintenance Alignment: Matches Tesla’s service intervals—recommended replacement every 4
years for Model Ys with heat pumps, and every 6 years for non-heat
pump models. Replacing it on schedule avoids moisture buildup that
leads to costly AC repairs (e.g., compressor replacement, which can
cost thousands).
While the desiccant itself is simple to install, it requires AC
system expertise (due to refrigerant handling):
- Recover Refrigerant: A certified technician will first use an AC recovery machine to
safely remove all refrigerant from the Model Y’s system (required
by environmental regulations).
- Access Accumulator: The accumulator (located near the front of the vehicle, connected
to the AC compressor) is opened, and the old desiccant is removed.
- Install New Desiccant: The CFN 265mm desiccant is placed into the accumulator—ensuring
it’s centered and the mesh bag isn’t torn.
- Reassemble & Test: The accumulator is sealed, the system is evacuated (vacuumed) for
at least 30 minutes to remove residual moisture, then recharged
with fresh R1234yf refrigerant. A leak test is performed to confirm
the system is tight.
This 265mm desiccant is exclusively for Tesla Model Y (all variants, including heat pump and non-heat pump models). It
won’t fit other Tesla models (Model 3/S/X use desiccants of
different lengths) or non-Tesla vehicles. It’s ideal for:
- Routine AC/heat pump maintenance (following Tesla’s service
schedule).
- Fixing moisture-related AC issues (e.g., weak cooling, ice
buildup).
- Replacing the desiccant after AC system repairs (e.g., hose
replacement, compressor service).
By keeping your Model Y’s AC/heat pump system dry, this CFN
desiccant ensures reliable cooling/heating, extends the life of
expensive AC components, and avoids unexpected breakdowns—critical
for comfort in all driving conditions.
