Best Oil Cooler Sandwich Plate for Custom Oil Cooling Setups

#1 · Best Overall

1. Mishimoto Thermostatic Plate

• Weight: 0.04 kg

Best for: Compact Thermostatic Sensor Plate.

Why it ranks #1: Its 185°F / 85°C thermostat, M20 x 1.5 ports, two 1/8-inch NPT ports, and 6061 aluminum suit a versatile thermostatic cooler setup.

A rear-mounted 85°C thermostat gives the Mishimoto plate temperature-based oil-flow control, enabling cooler routing to respond as the engine warms. Its two 1/8-inch NPT ports also accommodate sensors or oil-feed connections, combining thermal management and auxiliary plumbing in a compact aluminum plate.

The built-in thermostat is rated at 185°F/85°C, providing an automatic temperature-control point for the cooler circuit rather than a plain sensor-only adapter. Two 1/8-inch NPT ports, supplied with a plug, let an installer add sensors or an oil feed while keeping those connections at the plate. The 6061 aluminum construction and stated 3.19-by-2.8-by-1.18-inch size support a compact installation, with M20 x 1.5 ports defining a key compatibility requirement.

Skip it if you need four sensor ports at the filter; GlowShift GS-AF1 B007SXGAZQ provides four 1/8-27 NPT ports.

This is suited to buyers wanting thermostat control plus two auxiliary connections in a compact M20 x 1.5 plate. Confirm the filter-mount thread and account for its 85°C control point when planning the cooler circuit.

Listed on Amazon as: Mishimoto Oil Sandwich Plate with Rear-Mounted Thermostat

#2 · Best AN10 Thermostat

2. broyear AN10 Thermostatic Plate

• Weight: 1.1 lb
• Package Dimensions: 4.33 x 3.94 x 3.94 in

Best for: Thermostatic AN10 Cooler Routing.

Why it ranks #2: The built-in 82°C thermostat and AN10 connections directly address temperature-controlled routing to an external cooler in custom performance systems.

An integrated 82°C thermostat is the defining feature of this broyear AN10 plate, enabling oil flow to an external cooler to be managed according to operating temperature. A 1/8-inch NPT port adds a connection point for a sensor or related fitting in a custom cooling setup.

The thermostat element is intended to regulate oil routing as temperatures change, which can help manage an external cooler circuit without relying on a fixed, always-open route. AN10 connections support the stated aftermarket cooling-system use, including turbocharged and performance applications, while the 1/8-inch NPT port provides an additional connection point. The plate is also described for oil-filter relocation. Its practical fit depends on the engine’s filter arrangement and compatible threads.

Skip it if you need several sensor ports; HEROFFIX B0GJ6RJ9NN offers three 1/8-inch NPT ports.

This plate fits buyers assembling a thermostatically managed AN10 cooler circuit for a custom or turbocharged engine. Its single listed NPT port limits auxiliary connections, and the filter mount and threads must suit the installation.

Listed on Amazon as: Oil Cooler Sandwich Plate AN10 with 1/8" NPT Port & 82°C Inner Thermal

#3 · Best Thread Flexibility

3. PiKBUK AN10 Thermostatic Adapter

• Weight: 1.08 lb
• Package Dimensions: 4.29 x 3.9 x 3.7 in

Best for: 82°C AN10 Flow Control.

Why it ranks #3: It combines an 82°C thermostat and AN10 ports with both 3/4-16 UNF and M20x1.5 center-bolt options for broader listed fitment.

PiKBUK’s built-in 82°C thermostat controls flow between the factory oil circuit and an external cooler, enabling temperature-responsive routing in an AN10 setup. The plate also provides a sender mounting point, so oil temperature or pressure instrumentation can be incorporated at the filter adapter.

Below approximately 82°C, the listed operating description says oil circulates through the factory cooling loop; above that point, the thermostat gradually diverts flow toward the external cooler. That behavior suits buyers who want temperature-managed AN10 plumbing rather than an always-open cooler route. The M20x1.5 and 3/4-16UNF center-bolt options address different filter-mount interfaces, and the sender provision supports a gauge installation without making the sensor the only use of the plate.

Skip it if you need more auxiliary ports; HEROFFIX B0GJ64FBZ9 lists three 1/8-inch NPT connections.

This fits an AN10 cooler installation where temperature-based diversion and a sender mount are priorities. The approximate 82°C threshold and available center-bolt threads are important boundaries when matching the plate to the engine and cooling plan.

Listed on Amazon as: Oil Filter Sandwich Plate Thermostatic Adapter for AN10 Oil Cooler

#4

4. Mishimoto MMOP-SP Plate

• Weight: 9.6 oz

Best for: Universal M20 Thermostat Plate.

Why it ranks #4: This non-thermostatic M20 x 1.5 plate has two 1/8-inch NPT ports and 6061 aluminum, supporting cooler routing and sensor installation.

Mishimoto’s high-flow plate regulates oil flow to the cooler until the engine warms, enabling temperature management that the listing identifies as useful for cold-climate oil-system protection. Its M20 x 1.5 interface and two plugged 1/8-inch NPT ports support a range of sensor and oil-feed layouts.

The universal-fit listing and M20 x 1.5 thread specify the plate’s filter-side connection, while two 1/8-inch NPT ports provide places for sensors or oil-feed plumbing. The high-flow design is described as holding back cooler flow until the engine is properly warmed, helping address cold-start operation. Lightweight 6061 aluminum and the square O-ring design support a compact, sealed filter-area installation; thread and sealing compatibility still determine whether it suits a particular engine.

Skip it if you need interchangeable filter-mount threads; HEROFFIX B0GJ6RJ9NN includes four thread adapters.

This suits an M20 x 1.5 application needing warm-up-aware cooler flow and two auxiliary ports, especially where cold-climate protection matters. Its listed thread is specific, so other filter-mount sizes require a different solution.

Listed on Amazon as: Mishimoto – MMOP-SP Oil Sandwich Plate, Silver

#5

5. broyear AN10 Plate

• Weight: 1.06 lb
• Package Dimensions: 4.13 x 4.02 x 3.86 in

Best for: Gauge-Sender Installation.

Why it ranks #5: Its AN10 input and output support cooler lines, while the O-ring design and sensor-adapter function address sealing and gauge installation.

The broyear plate combines AN10 cooler connections with an oil-sender adapter, enabling a gauge sender and cooler feed lines to be added at the filter location. Its aluminum construction and O-ring design support a compact installation without drilling the oil pan or removing stock sensors.

AN10 input and output connections provide a route for cooler lines, while the sender adapter gives an oil temperature or pressure sensor a mounting point for gauge use. Installing at the oil filter avoids drilling the pan and preserves stock sensors, simplifying the described installation workflow. The O-ring is specified to improve tightness at the filter area and help prevent oil leakage. The listing identifies M20x1.5 and 3/4-16UNF threads, so thread compatibility remains central to fit.

Skip it if you need an integrated temperature-controlled bypass; the broyear B0H33C6LC8 includes an 82°C thermostat.

This suits an installer adding AN10 cooler plumbing and a gauge sender through the oil-filter area while keeping the oil pan untouched. Check the listed center-bolt threads against the application, and note that temperature-based flow control is not specified.

Listed on Amazon as: M20x1.5 Oil Cooler Sandwich Plate with AN10 Fittings 3/4-16UNF

#6 · Most Thread Options

6. HEROFFIX Multi-Thread Plate

• Weight: 1.12 lb
• Package Dimensions: 5.47 x 4.17 x 1.34 in

Best for: Multi-Thread Sensor Plumbing.

Why it ranks #6: Four included adapter threads—M18x1.5, M20x1.5, M22x1.5, and 3/4-16—plus three 1/8-inch NPT ports offer adaptable connections.

Four included adapter threads give the HEROFFIX plate broad mounting options, enabling use across applications with M18x1.5, M20x1.5, M22x1.5, or 3/4-16 threads. Three 1/8-inch NPT ports add flexibility for sensor and oil-feed connections in an aluminum-alloy adapter.

The included thread adapters address four listed filter-mount thread sizes, making this a flexible choice when a single fixed-thread plate would not match the vehicle. Three 1/8-inch NPT ports can serve oil temperature or pressure sensors and turbo oil-feed lines, supporting more than one auxiliary connection. Anodized aluminum alloy is specified for heat dissipation and oxidation resistance. The listing explicitly calls for measuring thread diameter and pitch, so selecting the correct adapter remains part of installation.

Skip it if you only need M20x1.5 or 3/4-16 and fewer ports; HEROFFIX B0GJ64FBZ9 lists those two threads.

This suits installers managing several sensor or feed connections across one of four listed filter-mount thread sizes. Measure thread diameter and pitch before choosing an adapter, since the plate’s versatility does not remove that fit requirement.

Listed on Amazon as: Oil Cooler Sandwich Plate Adapter Aluminum Alloy 1 Set

#7 · Best Three-Port Plate

7. HEROFFIX M20 Plate

• Weight: 13.7 oz
• Package Dimensions: 5.31 x 4.21 x 1.26 in

Best for: Two-Thread Three-Port Adapter.

Why it ranks #7: Three 1/8-inch NPT ports provide sensor or oil-feed connections, and the package lists M20x1.5 and 3/4-16 adapters.

Two included adapter threads—M20x1.5 and 3/4-16—give this HEROFFIX plate flexibility across those filter-mount sizes, enabling a shared three-port platform for different applications. Its three 1/8-inch NPT ports support sensor or oil-feed connections, while anodized aluminum alloy aids heat dissipation.

The included M20x1.5 and 3/4-16 UNF adapters address two common listed filter-mount thread options, reducing reliance on a single fixed interface. Three 1/8-inch NPT ports provide connection points for temperature or pressure sensors and turbo oil-feed lines. The aluminum-alloy body is described as supporting heat dissipation, and its anodized finish is specified for oxidation resistance. As with the other HEROFFIX adapter, the buyer must measure the engine’s filter-mount thread diameter and pitch before installation.

Skip it if you need M18x1.5 or M22x1.5 mounting options; HEROFFIX B0GJ6RJ9NN includes those adapter threads.

This is suited to an installer who needs three auxiliary ports and one of the two included filter-mount thread sizes. Measure the mount’s diameter and pitch before fitting, since compatibility depends on matching those threads.

Listed on Amazon as: Oil Cooler Sandwich Plate Adapter Aluminum Alloy with 2 Adapter M20x1.5 & 3/4-16 for Engine Transmission Filter Cooling System Black 1 Set

#8

8. X AUTOHAUX Cooler Plate

• Weight: 0.47 kg

Best for: Two-Port Aluminum Sensor Plate.

Why it ranks #8: The aluminum plate lists M20x1.5 and 3/4-16 thread sizes with two 1/8 NPT ports for sensors, oil feed, or accessories.

Two 1/8 NPT ports make the X AUTOHAUX plate useful for adding sensors or oil-feed connections, enabling auxiliary plumbing at the oil filter without a four-port layout. Its aluminum-alloy body has an anodized finish and is listed with M20x1.5 and 3/4-16UNF adapter threads.

The two NPT ports are described for oil-cooling lines, gauges, or other accessories, giving an installer a pair of connection points for a straightforward setup. M20x1.5 and 3/4-16UNF thread sizes cover the listed filter interfaces, while the aluminum alloy and anodized finish are specified for heat resistance and oxidation protection. The plate is also described as supporting heat dissipation and lubricant consistency. No thermostat is listed, so temperature-responsive bypass control is not part of its stated feature set.

Skip it if you require thermostat-controlled routing; Mishimoto MMOP-SPTR B00IJQOH1K has an 85°C thermostat.

This plate suits buyers adding two auxiliary connections to an M20x1.5 or 3/4-16UNF filter setup. Its listed features focus on ports and aluminum construction, so choose another adapter if automatic temperature control is required.

Listed on Amazon as: X AUTOHAUX Universal Car Aluminum Alloy Oil Filter Cooler Sandwich Thread Plate Adapter Oil Cooler Kit Red M20x1.5 1/8 NPT

#9

9. Modengzhe Universal Plate

• Weight: 13.28 oz

Best for: Dual-Thread Aluminum Plate.

Why it ranks #9: Its aluminum plate lists both 3/4-16 UNF and M20x1.5 adapter threads, but the supplied details do not list cooler-line ports or a thermostat.

The Modengzhe plate lists both 3/4-16UNF and M20x1.5 adapter threads, enabling use with either of those filter-mount interfaces. Its lightweight aluminum construction receives hard anodizing, which the listing associates with high-temperature and oxidation resistance for an oil-filter cooling setup.

The two stated thread sizes offer a choice between 3/4-16UNF and M20x1.5 applications, while the listed O-ring inner and outer diameters give concrete sealing dimensions to consider during installation. Aluminum construction keeps the adapter lightweight, and hard anodizing is specified for resistance to high temperature and oxidation. The product description also cites heat dissipation and lubricant consistency, but it does not list sensor ports or thermostat control as part of this plate’s feature set.

Skip it if you need temperature-controlled cooler routing; Mishimoto MMOP-SP B00860FZTW regulates flow until the engine warms.

This suits buyers seeking a basic aluminum sandwich plate with either of two listed thread sizes and specified O-ring dimensions. Its stated features do not include sensor ports or a thermostat, so those functions require another setup.

Listed on Amazon as: Modengzhe Universal Car Oil Filter Cooler Sandwich Plate Adapter (Silver)

#10

10. GlowShift Sensor Adapter

Best for: Four-Sensor Filter Adapter.

Why it ranks #10: Four 1/8-27 NPT ports and an M20 x 1.5 thread support multiple sensors, but the listed adapter is sensor-focused rather than an oil-cooler routing plate.

Four 1/8-27 NPT female ports distinguish the GlowShift adapter, enabling multiple oil pressure or temperature sensors to mount at the filter. It installs between the engine block and oil filter and includes flush-mount plugs and an O-ring for a sealed adapter arrangement.

The four ports accommodate a multi-sensor gauge layout, giving users more connection points than a simple two-port plate. Four flush-mount plugs are included for unused ports, while the O-ring is specified for a leak-free seal at the filter interface. Its M20 x 1.5 thread defines the listed adapter connection, and the listing adds a gasket-diameter compatibility condition. This product is a sensor-thread adapter; an integrated thermostat or AN10 cooler connections are not among its stated features.

Skip it if you need thermostat-managed cooler plumbing; PiKBUK PK25-006 B0FYDY5C4J has an 82°C thermostat and AN10 connections.

This suits gauge installations needing several oil pressure or temperature sensors at an M20 x 1.5 filter location. Check the stated gasket-diameter condition, and choose a different plate if the main goal is thermostatic cooler routing.

Listed on Amazon as: GlowShift 20mm 1.5 Oil Filter Sandwich Plate Sensor Thread Adapter