Details

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AISIN Clutch Master Pump – Nissan Frontier D22 (1997–2013)
This top-mounted clutch master pump by AISIN is a high-quality hydraulic cylinder designed to restore original clutch pressure for Nissan Frontier D22 2.5L manual transmission models. Precision-built in Japan and 100% end-of-line tested, this pump ensures smooth pedal feel and long-lasting performance.

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🔧 Product Specifications:

Item	Clutch Master Pump (Upper / Top)
Brand	AISIN (Made in Japan)
Part Number	CMN-681A
Bore Size	5/8”
OEM Reference Number	30610-2S407
Material	Steel / Cast Iron / Aluminum
Finish	Chrome 6-Free Coated (Environmentally Safe)

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🚗 Compatible Vehicles:

• Nissan Frontier D22 (1997–2013)
• 2.5L Diesel – Manual Transmission only

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✅ Key Features:

✔ Premium OE-quality by AISIN
✔ 5/8" bore size for original pedal feel
✔ Leak-free and high-pressure tested
✔ Lightweight, corrosion-resistant materials
✔ Exact fit, direct replacement
✔ Long-lasting durability

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📌 Note:

• Also called the “Top Clutch Pump” in workshop terms

• Price is for 1 unit only (Upper)

• For full performance, replace together with slave pump (bottom)