Oil Filter Blocks

Oil filter blocks—often called sandwich plates or adapter plates—provide a simple way to add an external oil cooler, remote filter mount, or gauge senders without permanently modifying your engine. They sandwich between the block and the oil filter, using the factory filter stud and sealing surface while exposing threaded ports to route oil out and back.

When you’re choosing an oil filter block, focus on these details to ensure a leak-free fit:

  • Center thread size—must match your engine’s filter stud. Common sizes: 3/4"-16, 13/16"-16, M20 x 1.5, M22 x 1.5.
  • O-ring diameter—needs to seal against the engine flange. Many blocks include O-rings for popular applications, but always measure if you’re unsure.
  • Port size and thread—1/8" NPT for oil pressure/temperature senders, larger 1/2" NPT or -10AN for cooler lines. Some blocks offer multiple ports.
  • Material and thickness—billet aluminum dissipates heat well and resists vibration; check overall height to ensure the filter clears the frame or exhaust.
  • Thermostatic control—some blocks include a built-in thermostat that only opens to the cooler once the oil reaches operating temperature, speeding warm-up and protecting against overcooling.

Explore the collection for sandwich plates, remote filter mounts, and complete relocation kits. Filter by thread size and port configuration to find the right oil filter block for your project.

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$76.00 $80.00
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GReddy Type-I oil cooler block assembly with 3/4x16UNF center bolt and adapter ports.
$142.50 $150.00
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GReddy blue anodized universal oil filter sandwich plate adapter with sensor ports
$85.50 $90.00
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Hard-anodized black CNC-machined 6061 aluminum oil filter sandwich adapter with threaded ports.
$210.47 $221.55
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CNC-machined stainless steel oil sandwich plate adapter with M22 x 1.5 threads
$22.95 $25.00
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Mishimoto CNC-machined aluminum oil sandwich plate with three NPT ports and two threaded center bolt adapters.
$66.95 $74.00
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CNC-machined silver billet aluminum oil sandwich plate with rear-mounted thermostat housing and NPT ports
$170.95 $188.00
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Mishimoto silver 6061 aluminum thermostatic oil sandwich plate with internal thermostat and 1/8 inch NPT sensor port
$148.95 $164.00
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Gold Mishimoto thermostatic oil sandwich plate in CNC-machined 6061 aluminum with M20 threads and NPT port
$170.95 $188.00
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CNC-machined 6061 aluminum oil sandwich plate with M22 stainless steel center bolt and dual 1/8-inch NPT ports
$79.95 $88.00
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Mishimoto Silver CNC-machined 6061 aluminum M20 oil sandwich plate with dual 1/8-in NPT sensor ports.
$79.95 $88.00
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Mishimoto billet aluminum in-line oil thermostat assembly with heat-sink fins and four -10AN fittings.
$166.95 $184.00
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Mishimoto CNC-machined aluminum oil filter housing and stainless steel adapter for 2010-2013 Hyundai Genesis Coupe.
$307.95 $339.00
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Gold anodized aluminum Mishimoto thermostatic oil sandwich plate with silver adapter bolts and mounting hardware.
$250.95 $276.00
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Silver CNC-machined Mishimoto non-thermostatic oil sandwich plate with mounting adapter hardware for Subaru BRZ and Toyota 86.
$187.95 $207.00
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BLOX Racing LS-VTEC conversion kit hardware including steel braided oil line and adapter fittings.

$166.40

In stock
Polished finish BLOX Racing remote oil filter relocation kit showing adapter block and mounting hardware

$116.80

In stock
Black anodized BLOX Racing remote oil filter relocation kit including adapter block and filter mount hardware.

$116.80

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Silver BLOX Racing oil filter sandwich block adapter with ports for oil pressure and temperature sensors

$48.80

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Black BLOX Racing oil filter block adapter for oil pressure and temperature sensor installation

$48.80

In stock

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