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SKU: QR25DE-SP
Boundary QR25DE-SP Billet Crankshaft Timing Sprocket – Nissan QR25DE 2.5L
The Boundary QR25DE-SP Billet Crankshaft Timing Sprocket high-performance billet timing sprocket for the Nissan QR25DE 2.5L engine. CNC-machined from billet steel with precise tooth profile delivers superior strength, improved timing accuracy, reduced stretch, and long-term reliability, the ultimate timing sprocket upgrade for any QR25DE build seeking enhanced durability, precise valve timing, and protection against catastrophic timing chain failure under high-RPM or boosted applications.
Key Features
- Billet Steel Construction – Significantly stronger than stock sprocket for high-RPM and boosted applications
- Precision CNC Machined – Exact tooth profile ensures accurate timing and smooth chain operation
- QR25DE Specific – Direct fit for Nissan QR25DE 2.5L engines
- Improved Durability – Reduces risk of timing chain stretch and sprocket wear
- High-Performance Reliability – Ideal for stock, tuned, or forced-induction QR25DE builds
| Spec | Detail |
|---|---|
| Part Number | QR25DE-SP |
| Brand | Boundary |
| Type | Billet Crankshaft Timing Sprocket |
| Engine | Nissan QR25DE 2.5L |
| Material | Billet Steel |
| Country of Origin | United States |
| Warranty | Boundary Limited Warranty |
Whats Included
- 1 x Boundary Billet Crankshaft Timing Sprocket
- Installation instructions
Product Notes
- Direct replacement for the factory crankshaft timing sprocket on QR25DE engines
- Recommended for high-RPM, high-mileage, or boosted applications
- Provides superior strength and timing accuracy over stock sprocket
Installation Notes
- Requires timing chain service (professional installation highly recommended)
- Estimated time: Included in full timing chain job
- Proper timing marks and torque specifications must be followed
This Part Fits
| Year Range | Make | Model | Trim / Engine | Notes |
|---|---|---|---|---|
| Various | Nissan | Models with QR25DE 2.5L engine | QR25DE applications | Billet crankshaft timing sprocket |
Why Choose Boundary Billet Timing Sprockets?
- #1 choice for high-strength billet timing components on Nissan engines
- Built & tested in the United States
- Chosen by builders for superior durability, precise timing, and protection against timing chain failure
Frequently Asked Questions
-
Q: Does this sprocket fit my QR25DE engine?
A: Yes, direct fit for all Nissan QR25DE 2.5L engines. -
Q: Is it stronger than stock?
A: Yes, billet steel construction provides significantly higher strength than the factory sprocket. -
Q: Do I need to replace the timing chain at the same time?
A: Highly recommended during timing service for best results and long-term reliability.
Shipping & Handling
- Method: Ground UPS or FedEx
- Availability: In stock – ships same or next business day
- Packaging: Official Boundary retail box
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