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Block Off Plates & Adapters

Simplify your engine bay and improve reliability with our range of block off plates and adapters. These components are used to seal unused ports, reroute coolant or oil lines, or adapt factory housings for aftermarket setups.

We carry EGR block off plates, coolant and oil block offs, sensor adapters, and billet fittings for Honda, Acura, and other performance platforms. CNC-machined from aluminum or stainless steel, these parts provide a clean, leak-free solution for custom builds, race cars, or emissions deletes (where permitted).

From simple block-off caps to full adapter kits, these upgrades make engine assembly, maintenance, and custom plumbing easier and more reliable.

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  • Radium Fuel Hanger FPR Block OffRadium Fuel Hanger FPR Block Off
    Radium Fuel Hanger FPR Block Off
    Market Description This kit allows decomissioning of Radium built-in pressure regulators in certain Radium fuel pump hangers. This allows the user to convert to a return system if they desire. Check with Radium Engineering about compatibility before purchasing. Product Description - Short Radium Fuel...
    $23.70
    $23.70
  • Radium Engineering Mazda 13B-REW ACV Block OffRadium Engineering Mazda 13B-REW ACV Block Off
    Radium Engineering Mazda 13B-REW ACV Block Off
    Market Description Block off plate for Mazda 13B-REW ACV on intake manifold. Necessary to use Radium fuel rail 20-0447. Associated Comments INSTALLATION INSTRUCTIONS AVAILABLE AT RADIUMAUTO.COM Product Description - Short Radium Engineering Mazda 13B-REW ACV Block Off AAIA Part Type Description Engine Intake Manifold...
    $28.45
    $28.45
  • Radium Engineering 2013+ Ford Focus ST Sound Symposer Block OffRadium Engineering 2013+ Ford Focus ST Sound Symposer Block Off
    Radium Engineering 2013+ Ford Focus ST Sound Symposer Block Off
    Product Description - Short Radium Engineering 2013+ Ford Focus ST Sound Symposer Block Off Associated Comments INSTALLATION INSTRUCTIONS AVAILABLE AT RADIUMAUTO.COM AAIA Part Type Description Engine Air Intake Sound Generator Delete Product Description - Extended SOUND SYMPOSER DELETE KIT, FOCUS ST Product Description -...
    $47.45
    $47.45
  • Edelbrock 351-M Choke Block OffEdelbrock 351-M Choke Block Off
    Edelbrock 351-M Choke Block Off
    Market Description The Edelbrock #8971?Choke Block-Off Small Block Ford 351M/ 400M for #2171, #3711 Intake Manifold The Edelbrock #8971 Choke Block-Off Small Block Ford 351M/ 400M for #2171, #3711 Intake Manifold Product Description - Extended The Edelbrock Choke Block-Off Small Block Ford 351M/ 400M...
    $30.95
    $30.95
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  • Edelbrock Chock Block Off 3711Edelbrock Chock Block Off 3711
    Edelbrock Chock Block Off 3711
    Market Description The Edelbrock #8951 Choke Block-Off For?Small Block Oldsmobile for #3711 Intake Manifold The Edelbrock #8951 Choke Block-Off For Small Block Oldsmobile for #3711 Intake Manifold Product Description - Extended The Edelbrock Choke Block-Off For Small Block Oldsmobile for #3711 Intake Manifold CHOKE...
    $37.95
    $37.95
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  • Skunk2 B-Series VTEC Black Anodized Block Off PlateSkunk2 B-Series VTEC Black Anodized Block Off Plate
    Skunk2 B-Series VTEC Black Anodized Block Off Plate
    Market Description Skunk2 now offers B-Series VTEC solenoid block off plate for applications where the VTEC solenoid is no longer used. This plate is CNC machined from 6061 aluminum and comes with mounting hardware. Available in either black or raw finish. Utilizes the factory...
    $55.53
    $55.53
  • Skunk2 B-Series VTEC Hard Anodized Block Off PlateSkunk2 B-Series VTEC Hard Anodized Block Off Plate
    Skunk2 B-Series VTEC Hard Anodized Block Off Plate
    Market Description Skunk2 now offers B-Series VTEC solenoid block off plate for applications where the VTEC solenoid is no longer used. This plate is CNC machined from 6061 aluminum and comes with mounting hardware. Available in either black or raw finish. Utilizes the factory...
    $55.53
    $55.53
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  • Skunk2 K-Series VTEC Clear Anodized Block Off PlateSkunk2 K-Series VTEC Clear Anodized Block Off Plate
    Skunk2 K-Series VTEC Clear Anodized Block Off Plate
    Market Description The Skunk2 Racing VTEC Solenoid Block-Off replaces the factory spool valve assembly for the K20 and K24 K Series engines. The block-off plate is used when the VTEC function is no longer active; commonly refereed to as VTEC KILLER set ups. Product...
    $65.98
    $65.98
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  • Skunk2 K-Series VTC Raw Block Off SolenoidSkunk2 K-Series VTC Raw Block Off Solenoid
    Skunk2 K-Series VTC Raw Block Off Solenoid
    Market Description The Skunk2 Racing VTC Solenoid Delete is CNC machined from 6061 billet aluminum and replaces the OEM VTC solenoid on K20 and K24 K Series engines that have replaced the OEM hydraulic intake cam gear for a mechanically adjustable Skunk2 race intake...
    $55.53
    $55.53
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  • Skunk2 K-Series VTC Black Block Off SolenoidSkunk2 K-Series VTC Black Block Off Solenoid
    Skunk2 K-Series VTC Black Block Off Solenoid
    Market Description The Skunk2 Racing VTC Solenoid Delete is CNC machined from 6061 billet aluminum and replaces the OEM VTC solenoid on K20 and K24 K Series engines that have replaced the OEM hydraulic intake cam gear for a mechanically adjustable Skunk2 race intake...
    $55.53
    $55.53
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  • Skunk2 K-Series VTEC Black Block Off SolenoidSkunk2 K-Series VTEC Black Block Off Solenoid
    Skunk2 K-Series VTEC Black Block Off Solenoid
    Market Description The Skunk2 Racing VTEC Solenoid Block-Off replaces the factory spool valve assembly for the K20 and K24 K Series engines. The block-off plate is used when the VTEC function is no longer active; commonly refereed to as VTEC KILLER set ups. Product...
    $65.98
    $65.98
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  • Remark 2023+ Toyota GR Corolla Carbon Fiber Outer Exhaust Block Off PlatesRemark 2023+ Toyota GR Corolla Carbon Fiber Outer Exhaust Block Off Plates
    Remark 2023+ Toyota GR Corolla Carbon Fiber Outer Exhaust Block Off Plates
    Product Description - Short Remark 2023+ Toyota GR Corolla Carbon Fiber Outer Exhaust Block Off Plates
    $335.00
    $335.00
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  • Turbosmart EFR Compressor Housing BOV Block Off Plate.
    Turbosmart EFR Compressor Housing BOV Block Off Plate
    TurboSmart EFR Compressor Housing BOV Block Off Plates Turbosmart's Billet Blanking plate is the easiest way to disable the EFR BOV.  Designed specifically for the Borg Warner EFR, KKK and EcoBoost Turbochargers the Blockoff Plates eliminate the originally fitted diverter valve, required for fitment...
    $36.95
    $36.95
  • PW IAC Block Off Plate / Idle Air Control Delete for Ford.PW IAC Block Off Plate / Idle Air Control Delete for Ford.
    PW IAC Block Off Plate / Idle Air Control Delete for Ford
    PW IAC Block Off Plate / Idle Air Control Delete for Ford Key Features: 100% CNC machined 6061 grade billet aluminum Precision CNC machined for 100% leak free! Includes: Billet aluminum block off plate Gasket Hardware (2 bolts) Fitment: 1979 - 2004 Ford Mustang,...
    $18.00
    $18.00
  • Precision Works K-Series VTC & VTEC Solenoid Block Off Plate.Precision Works K-Series VTC & VTEC Solenoid Block Off Plate.
    Precision Works K-Series VTC & VTEC Solenoid Block Off Plate
    Precision Works Honda K-Series VTC & VTEC Solenoid Block Off Plate Fits Honda Acura K-Series Engines Precision CNC machined Made from 6061 billet aluminum Includes mounting hardware Direct bolt-on Instruction is not included
    $70.00
    $70.00
  • PLM Block Off Kit For 35mm 38mm 2-bolt flange wastegate EWG.PLM Block Off Kit For 35mm 38mm 2-bolt flange wastegate EWG.
    PLM Block Off Kit For 35mm 38mm 2-bolt flange wastegate EWG
    PLM EWG Block Off Kit For 35mm, 38mm 2-bolt Wastegate This block off flange, gasket, bolts are the perfect solution when you need to run internal wastegate or if you have a EWG up-pipe or header, but don't have an external wastegate yet. Also useful...
    $15.00
    $15.00
  • PLM Block Off Flange & V-Band Clamp For Tial 44mm MVR Wastegate EWG.PLM Block Off Flange & V-Band Clamp For Tial 44mm MVR Wastegate EWG.
    PLM Block Off Flange & V-Band Clamp For Tial 44mm MVR Wastegate EWG
    PLM Block Off Flange & V-Band Clamp For Tial 44mm MVR Wastegate EWG This block off flange and clamp is the perfect solution when you need to run internal wastegate or if you have a EWG up-pipe or header, but don't have an external...
    $29.00
    $29.00
  • PLM Block Off Flange & V-Band Clamp For Tial 38mm MVR Wastegate EWG.PLM Block Off Flange & V-Band Clamp For Tial 38mm MVR Wastegate EWG.
    PLM Block Off Flange & V-Band Clamp For Tial 38mm MVR Wastegate EWG
    PLM Block Off Flange & V-Band Clamp For Tial 38mm MVR Wastegate EWG This block off flange and clamp is the perfect solution when you need to run internal wastegate or if you have a EWG up-pipe or header, but don't have an external...
    $29.00
    $29.00
  • PLM Block Off Flange & Clamp For Tial 44mm MVR Wastegate EWG.PLM Block Off Flange & Clamp For Tial 44mm MVR Wastegate EWG.
    PLM Block Off Flange & Clamp For Tial 44mm MVR Wastegate EWG
    PLM Block Off Flange & Clamp For Tial 44mm MVR Wastegate EWG This block off flange and clamp is the perfect solution when you need to run internal wastegate or if you have a EWG up-pipe or header, but don't have an external wastegate...
    $39.00
    $39.00
  • PLM Block Off Flange & Clamp For Tial 38mm MVS Wastegate EWG.PLM Block Off Flange & Clamp For Tial 38mm MVS Wastegate EWG.
    PLM Block Off Flange & Clamp For Tial 38mm MVS Wastegate EWG
    PLM Block Off Flange & Clamp For Tial 38mm MVS Wastegate EWG This block off flange and clamp is the perfect solution when you need to run internal wastegate or if you have a EWG up-pipe or header, but don't have an external wastegate...
    $30.00
    $30.00

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