Best Engine Oil Restrictors in 2026

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This adapter installs most commonly in the top-rear, or front-driver side of the engine block to access pressurized oil of the engine. Seals to the block with a sealing washer.

1/4" NPT taper pipe thread port in the rear of the fitting allows for common sensors or plumbing fittings.

Compatible with all GM LS Series Engines

【PREMIUM RACING DIPSTICK / UPGRADE 】.....................【All Metal with BILLET / Anodized】 , Easy to read

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Ftis GT25R/GT28R/GT28RS/GT30/GT35R & More

AN -4 , 7/16"-20UNF

Restrictor (Hole Size) :0.9mm (0.035")

Compatible with all GM LS Series Engines inclued LS1 LS2 LS3 LS6 LS7 LS9 LQ4 LQ9 4.8L 5.3L 6.0L 6.2L LM7 LR4 L59 LM4 L33 LH6 L92 L76 LY2 LY5 LY6 LC9 LFA LH8 LMG L98 L9H L20 L94 LZ1 L99 L96 LC8 L77;Compatible with GM Gen III & IV Engines.

Directly to replace the factory plastic barbell，machining have less tolerance, makes the gap smaller,makes the gap smaller, so that it can prevent dust from entering oil and keep it clean.

It was designed with a little taper, which will makes oil flow smoothly,can effectively prevent the loss of engine oil, increasing the use of flow.

【Wide Range Of Applications】Fits LS1-2-3-6-7-9-LQ4-LQ9-4.8L-5.3L-6.0L-6.2L L92 LS4 L99 LSA & more.

【Excellent Alternative】Replace the plastic factory barbell,1/4-20 threaded hole in the end of the Barbell for easy removal.

【High Quality Material】CNC Billet 7075 billet aluminum material for long lasting durability.

Application: This oil separator billet catch can is compatible with Hellcat Charger Challenger Demon Trackhawk 2015-2020

Benefit: The oil separator could catch the oil and moisture from the air, prevent misfires due to carbon accumulation, keep the engine clean and extend engine life

Well-Made: Custom billet fittings, better quality and longer service life

Country of origin : United States

Part number: 22045

Fit type: Vehicle Specific

Made Of High Quality Copper

CNC Machined Cut

Easy To Install

Package Dimensions: 1.27 H x 9.652 L x 7.366 W (centimetres)

Country of Origin : China

Fit type: Vehicle Specific

Application：For GT35, GT35R T25, T28, T3, T4, T6 Turbo

Size(AN) :AN-4 , 7/16""-24UNF

Restrictor (Hole Size) :1mm (0.035"")

Applicable Size: The turbine fuel supply adapter is installed on a 0.035 inch restrictor.

Fit for: Suitable for turbocharged or non-ball bearing turbocharged use.

Compatibility: Turbo oil feed fitting is suitable for GT25R / GT28R / GT28RS / GT30 / GT35R that requires throttle.

◆ Fitment:Oil Diverter Barbell Set is suitable for LS Engines, such as for LS1 LS2 LS3 LS4 LS6 LS7 LS9 LQ4 LQ9 L92 L99 LSA 4.8L 5.3L 6.0L 6.2L and more. Please confirm whether the product is suitable before purchasing

◆ O Ring Seal: The tube held down will prevent your passage from leaking oil. The low oil pressure will cause some damage to your engine, replace old or broken tube hold down to ensure your engine safety

◆ Good Replacement: Complete set includes 1pcs oil tube hold down, 1pc oil diverter barbell, 1pc oil bypass check valve plug and 1pc 10.9 bolt. Ideal and direct replacement for old or damaged oil diverter barbell kit, dependable to use

Quality Assurance M12x1.5 Straight Adapter is made by a professional manufacturer, with exquisite workmanship, trustworthy, and guaranteed quality.

High quality brass Oil Feed Fitting is made of high quality brass material, which is wear resistant and oil resistant, and has a long service life.

Use Oil Feed Adapter has a built in flow restrictor to provide suitable oil pressure for the turbine, which is essential for the normal operation of the turbine.

oil restrictors, allen head, aluminum, natural, dart shp block, small block chevy, pair

oil restrictors for use in dart sb chevy shp blocks are specifically designed for the priority main oil system to reduce the amount of oil flow to the top of the engine, reducing the risk of evacuating the oil pan in continuous high rpm engines. kit includes two aluminum restrictors, an extra o-ring and detailed installation instructions.

Fit type: Vehicle Specific

Condition: New Replacement Oil Separator Repair Kit

Package Included: 1PC Oil Separator Repair Kit

Part Number:21475228,21122541