3N71A 3N71B JR300H 3 Speed RWD Rebuild Overhaul Kit 1971-1984 Nissan Mazda Ford
This premium transmission overhaul kit is manufactured by JKGJ Transmission Parts and trusted by professional rebuilders nationwide. Built to meet or exceed industry standards, it delivers reliability and performance for daily drivers and restoration builds alike.
Vehicle Fitment:
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Transmission: 3N71A, 3N71B, JR300H
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Configuration: 3-Speed, Rear-Wheel Drive
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Applications: Nissan, Mazda, Ford
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Model Years: 1971–1984
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Includes: 3 Extension Housing Seals
Kit Includes:
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OE-quality paper gaskets
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Rubber lip seals
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O-rings
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Pan gaskets (cork or fiber)
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Metal clad seals
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Sealing ring kit (metal or Teflon, depending on application)
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Some late-model transmissions may use molded rubber gaskets (noted when included)
Manufactured by:
JKGJ Transmission Parts – Assembled to strict specifications
Expert Support: Contact Us – Just Ask For John!
Available 7 days a week to assist with fitment and product inquiries.
Shipping Information:
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Ships via UPS Ground in the Continental US
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USPS Priority Mail to Alaska and Hawaii
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Worldwide shipping available – Contact us if your country is not listed
Order Tip:
Please include your year, make, model, and VIN with your order to ensure fast and accurate processing.
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