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SKU: A20D-12MM-OPG
Boundary 12mm Billet Oil Pump Gear 2012-2021 Subaru BRZ FA20D 2.0L (BRZ Only)
The Boundary A20D-12MM-OPG 12mm Billet Oil Pump Gear is the best high-performance oil pump gear upgrade for 2012-2021 Subaru BRZ owners with the FA20D 2.0L engine. Precision-machined from billet steel, this direct replacement gear eliminates the notorious OEM 12mm gear failure issue, providing superior strength, reliability, and oil pressure stability – essential for high-RPM, boosted, or track-driven BRZ builds seeking maximum engine protection and peace of mind.
Key Features
- Billet Steel Construction: CNC-machined from high-strength billet steel for exceptional durability and resistance to shear failure
- 12mm Gear Design: Matches OEM size but far exceeds factory strength – prevents catastrophic gear stripping at high RPM
- Direct Replacement: Drop-in fit for factory oil pump – no modifications or pump replacement required
- Precision Tolerances: Tight machining ensures smooth operation, proper mesh, and consistent oil pressure
- Track & High-Performance Proven: Designed to handle high-RPM abuse, forced induction, and aggressive driving
- Made in USA: Manufactured by Boundary with rigorous quality control for motorsport reliability
Specifications
| Specification | Detail |
|---|---|
| Part Number | A20D-12MM-OPG |
| Material | Billet Steel |
| Gear Size | 12mm |
| Compatibility | 2012-2021 Subaru BRZ FA20D 2.0L (BRZ Only – Not FR-S/86) |
| Installation | Direct Drop-In (Oil Pump Disassembly Required) |
| Country of Origin | United States |
| Warranty | Limited (Manufacturer) |
| Shipping Dimensions | 9.1 x 5.9 x 1.5 inches |
| Shipping Weight | 0.8 lbs |
Product Notes
- Specific to Subaru BRZ FA20D – not compatible with Toyota FR-S or 86 due to different oil pump gear specs
- Prevents common 12mm gear failure under high-RPM or boosted conditions – essential for track or modified engines
- Oil pump disassembly required – professional installation recommended
Installation Notes
- Estimated time: 4-8 hours, advanced difficulty, professional installation strongly recommended
- Requires oil pump removal and disassembly – use new gaskets, seals, and torque to factory specs
- Inspect oil pump chain, tensioner, and related components during install
This Part Fits
| Year | Make | Model | Notes |
|---|---|---|---|
| 2012-2021 | Subaru | BRZ | FA20D 2.0L (BRZ Only) |
Why Choose Boundary 12mm Billet Oil Pump Gear?
- Billet steel construction eliminates factory gear failure – superior strength for high-RPM and boosted applications
- Direct drop-in replacement – no pump modifications needed
- Made in USA with precision machining – trusted in motorsport and high-performance BRZ builds
Frequently Asked Questions
-
Q: Will this fit my 2017 Subaru BRZ?
A: Yes, A20D-12MM-OPG is designed for all 2012-2021 Subaru BRZ with FA20D 2.0L engine. -
Q: Does it fit Toyota FR-S or 86?
A: No – BRZ-specific due to different oil pump gear design; not compatible with FR-S/86. -
Q: Is professional installation required?
A: Yes – requires oil pump removal and precise reassembly; professional recommended. -
Q: Why upgrade the oil pump gear?
A: Prevents catastrophic failure common in high-RPM or modified FA20 engines – essential for reliability.
Shipping & Handling
- Method: UPS/FedEx Ground
- Availability: In stock - ships same or next business day
- Packaging: Secure protective packaging
- Weight: 0.8 lbs
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