2016 Acura RLX Cooling System Parts

This table covers the engine coolants and antifreeze formulations specified for this cooling system. Typical signs include a rising temperature gauge, rusty or sludged coolant, or a heater that blows cold. Use the chemistry named in the notes. Mixing silicate, OAT and HOAT formulas can gel in the radiator. Read more

16 Coolant / Antifreeze parts are listed for the 2016 Acura RLX, from PRESTONE, PEAK, VALVOLINE and 4 other brands. FVP MV5050GAL carries the "Popular" badge. All of them fit every engine offered in the 2016 RLX.

The Compatible With All Colors section lists 1 option from PRESTONE — grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. PRESTONE AF3055 is listed in this group.

In the Economy grade, FVP, PRESTONE, PEAK and 1 other brand supply 4 parts: the catalog's value-priced group. A representative part number is FVP MV5050GAL.

The Premium section lists 5 options from PRESTONE and PEAK — a step above OE specification in materials, tolerances or warranty terms. PRESTONE AF2100 is listed in this group.

The Standard Replacement section lists 6 options from BECK/ARNLEY, VALVOLINE, AISIN and 2 other brands — built to original-equipment specification. VALVOLINE 861398 is listed in this group.

This table covers the seals at the Coolant Hose / Pipe. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

4 Coolant Hose / Pipe Seal parts for the 2016 Acura RLX come from 4 brands — AJUSA, FEL-PRO, MAHLE / CLEVITE and 1 other brand. Every part fits both the 3.5L V6 and the 3.5L V6 ELECTRIC/GAS.

Part numbers include AJUSA 16022450, FEL-PRO ES72774 and MAHLE / CLEVITE C32870, among others listed above.

This table covers the caps on the overflow / expansion tank. Typical signs include a leak at the neck, a cap that will not hold pressure, or a missing tether. Match the pressure rating or thread in the notes — radiator, reservoir and fuel caps are not interchangeable. Read more

3 Coolant Reservoir Cap parts for the 2016 Acura RLX come from 2 brands — MOTORAD and AUTOTECNICA. 2 parts fit every engine; the other 1 is engine-specific.

Part numbers include AUTOTECNICA HA0722920, MOTORAD T135 and MOTORAD T128.

This table covers the Coolant Water Crossover Mounting sets. Read more

One part is listed for the 2016 Acura RLX — VICTOR REINZ 181016001.

This table covers the Cooling Fan control modules. Read more

4 Cooling Fan Control Module parts for the 2016 Acura RLX come from 2 brands — US MOTOR WORKS and WELLS. Every part fits both the 3.5L V6 and the 3.5L V6 ELECTRIC/GAS.

Listed part numbers: US MOTOR WORKS 16749, US MOTOR WORKS 16789 and US MOTOR WORKS 16795, plus the other parts above.

This table covers the adapters used to pressure-test this cooling system. Read more

3 Cooling System Tester Adapter parts are listed for the 2016 Acura RLX, from MOTORAD and GATES. All of them fit every engine offered in the 2016 RLX.

This group includes GATES 31409, MOTORAD 3124 and MOTORAD 3125.

This table covers the radiators that dump engine heat to airflow through the core. Typical signs include overheating in traffic, a wet core, or coolant that disappears with no puddle. Replace the cap if it cannot hold the rated pressure, and bleed the system after the swap. Read more

7 Radiator parts are listed for the 2016 Acura RLX, from GPD, ULTRA-POWER, DENSO and 4 other brands. DENSO 2219345 carries the "Popular" badge. All of them fit every engine offered in the 2016 RLX.

Economy: 2 parts, from GPD and ULTRA-POWER. A representative part number is GPD 13421C.

The Standard Replacement section: 5 options from DENSO, KOYORAD, AGILITY and 2 other brands. DENSO 2219345 is listed in this group.

This group includes DENSO 2219345, GPD 13421C and ULTRA-POWER 13421 and the remaining parts above.

This table covers the caps that hold system pressure at the radiator or reservoir neck. Typical signs include a leak at the neck, a cap that will not hold pressure, or a missing tether. Match the pressure rating or thread in the notes — radiator, reservoir and fuel caps are not interchangeable. Read more

5 Radiator Cap parts are listed for the 2016 Acura RLX, from MOTORAD, GATES, CALORSTAT and 1 other brand. GATES 31412 carries the "Popular" badge. All of them fit every engine offered in the 2016 RLX.

The Locking Replacement section lists 1 option from MOTORAD — grouped under the catalog's "Locking Replacement" designation — the notes column spells out what sets them apart. MOTORAD ST37 is listed in this group.

The Standard Replacement section: 4 options from GATES, CALORSTAT, MOTORAD and 1 other brand. GATES 31412 is listed in this group.

Part numbers include GATES 31412, MOTORAD ST37 and CALORSTAT RC0040, among others listed above.

This table covers the petcocks used to drain the radiator. Read more

This group shows a single part: DORMAN 490216.

This table covers the fan assemblies (and clutches, where listed) that pull air through the radiator. Read more

3 Radiator Fan Assembly parts for the 2016 Acura RLX come from 3 brands — GPD, TECHPRO and VDO / CONTINENTAL. Every part fits both the 3.5L V6 and the 3.5L V6 ELECTRIC/GAS.

The Economy section: 2 options from GPD and TECHPRO. GPD 2812180 is listed in this group.

Standard Replacement: 1 part, from VDO / CONTINENTAL. A representative part number is VDO / CONTINENTAL FA71912.

Listed part numbers: GPD 2812180, TECHPRO AC3115126 and VDO / CONTINENTAL FA71912.

This table covers the upper, lower and connecting hoses between radiator, engine and reservoir. Typical signs include swelling, cracks, a soft spot, or a leak at a clamp. Replace adjacent aged hoses while the system is drained — they share the same heat cycle. Read more

2 Radiator Hose parts for the 2016 Acura RLX come from GATES.

This group includes GATES 24884 and GATES 24883.

This table covers the senders that report coolant temperature to the gauge or ECU. Typical signs include a gauge that sits on empty or overheat, or a lamp that does not match what the engine is doing. Rule out the cluster and the wiring before replacing the sender. Read more

12 Temperature Sender / Sensor parts are listed for the 2016 Acura RLX, from NTK, CALORSTAT, GPD and 8 other brands. BECK/ARNLEY 1581570 carries the "Popular" badge. 10 parts fit every engine; the other 2 are engine-specific.

Economy: 4 parts, from CALORSTAT, GPD, UNITED MOTOR PRODUCTS and 1 other brand. A representative part number is CALORSTAT WS3039.

The Standard Replacement section: 8 options from NTK, BECK/ARNLEY, WALKER PRODUCTS and 4 other brands. BECK/ARNLEY 1581570 is listed in this group.

This table covers the thermostats that open the coolant circuit at the specified temperature. Typical signs include slow warm-up, a gauge that climbs in traffic, or heat that never quite arrives. Replace the housing gasket with the thermostat and bleed the system so a trapped air pocket does not cook the new part. Read more

8 Thermostat parts for the 2016 Acura RLX come from 5 brands — BECK/ARNLEY, FOUR SEASONS, MOTORAD and 2 other brands.

The Economy section: 1 option from DORMAN. DORMAN 9025834 is listed in this group.

Standard Replacement: 3 parts, from BECK/ARNLEY, FOUR SEASONS and MOTORAD. A representative part number is BECK/ARNLEY 1430955.

4 further parts sit outside the graded sections, with the same engine-level match.

This group includes DORMAN 9025834, BECK/ARNLEY 1430955 and FOUR SEASONS 86192 and the remaining parts above.

This table covers the seals at the thermostat housing and water outlet. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

15 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 2016 Acura RLX, from FEL-PRO, MAHLE / CLEVITE, ELRING and 3 other brands. FEL-PRO 35741 carries the "Popular" badge. 12 parts fit every engine; the other 3 are engine-specific.

This table covers the pumps that circulate coolant through the block and radiator. Typical signs include coolant at the weep hole, pulley play, or a growl from the front of the engine. Replace the thermostat and refill with the specified coolant whenever the pump comes off. Read more

10 Water Pump parts for the 2016 Acura RLX come from 9 brands — AISIN, BECK/ARNLEY, FVP and 6 other brands. The "Popular" part is AISIN WPH801.

The Economy section: 4 options from BECK/ARNLEY, FVP, SKP and 1 other brand. BECK/ARNLEY 1312285 is listed in this group.

Standard Replacement: 6 parts, from AISIN, GMB, ACDELCO and 2 other brands. A representative part number is AISIN WPH801.

This table covers the gaskets between the water pump and the block or housing. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

6 Water Pump Gasket parts are listed for the 2016 Acura RLX, from FEL-PRO, MAHLE / CLEVITE, APEX and 3 other brands. FEL-PRO 35677 carries the "Popular" badge.

Part numbers include FEL-PRO 35677, MAHLE / CLEVITE K17818 and APEX AWP3161, among others listed above.