• Locks seals in place — stops seal pop-up under extreme cylinder pressure/EMP
• Cleaner intake/exhaust — reduces oil contamination and smoking
• Proven in Thai performance builds — road and track tested
• Perfect add-on during head work or fresh builds

• Toyota 1KD-FTV — Hilux N70 (KUN26), Prado 120/150, HiAce

• Set of valve stem seal retainers/locks for 1KD-FTV

Seals themselves are not included unless stated; pair with quality valve stem seals.

• Head removal recommended for best access and verification
• Fit retainers to OEM-quality seals; confirm proper seating and clearance
• Rotate engine by hand to check retainer/collet clearance before first start
• Ideal time to inspect guides, springs, and stem-to-seal fit

Professional installation strongly recommended.

Ideal for high-performance 1KD builds:

• Performance cam or fresh valve stem seals
• High-boost turbo setups (e.g., VNT 44mm, F55/PKS low or high mount)
• Front-mount intercooler and quality ECU calibration

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For off-road / competition use only. Engine modifications may affect compliance. Check local regulations before purchase.

Q: Do I need these on a stock 1KD?

A: They're most beneficial on high boost/high EMP setups or when the head is off. For stock power, they're optional insurance during a refresh.

Q: Can I fit them with the head on the engine?

A: Head-on installs are possible with the right tools and compressed air to hold valves up. Head removal is recommended for best access and proper verification.

Q: Will they change idle or drivability?

A: No. They don't alter cam timing, lift, or ECU strategy — they simply retain the seal under harsh conditions.

Q: What causes valve stem seal blowout?

A: High cylinder pressures and exhaust manifold pressure (EMP) can lift seals from their seats. This is common on high-boost builds without proper seal retention.

Q: Should I replace my valve stem seals at the same time?

A: Absolutely recommended! If you're installing retainers, it's the perfect time to fit fresh OEM-quality valve stem seals.