NEW PROCESS 978S9 Transmission Tail Housing Extension NP435

( Brand: New Process ), ( Manufacturer Part Number: 978S9 ), ( Material: Cast Iron ), ( Vintage Part: Yes ), ( Type: Tail Housing ), ( Oe/oem Part Number: Dodge Np435 ), ( Manufacturer Warranty: 14 Day ), ( Universal Fitment: No ), ( Country Of Origin: United States )

Review NEW PROCESS Dodge Transmission Tail Housing Extension Oem Mopar fits 1974

The Mopar 978S9 Transmission Tail Housing Extension for the 1974 Dodge NP435 is an essential component for those seeking to enhance the performance and durability of their classic vehicle's transmission system. This tail housing extension is meticulously designed and manufactured to provide a perfect fit for the NP435 transmission found in various Dodge models from that era.

This tail housing extension is engineered from high-quality cast iron, ensuring the utmost strength and longevity. Its precise design enables it to replace the original, often weak and prone-to-failure tail housing, providing significant reinforcement to the transmission. This reinforcement translates to improved power handling capacity, making it an ideal upgrade for those who engage in high-performance activities or simply want to ensure their transmission can handle the rigors of daily driving.

The 978S9 Transmission Tail Housing Extension features a robust bolt pattern that ensures a secure and reliable connection to the vehicle's chassis. It also includes an integrated oil cooler mounting surface, allowing for the installation of an oil cooler for even better transmission performance and temperature management.

Installing this tail housing extension is a straightforward process, with no modifications to the transmission required. It simply bolts on in place of the original tail housing, making it a practical upgrade for any Dodge enthusiast. Additionally, this tail housing extension is backed by the Mopar name, ensuring you're investing in a product that meets the highest standards of quality and reliability.

In summary, the Mopar 978S9 Transmission Tail Housing Extension for the 1974 Dodge NP435 is an essential upgrade for those seeking to enhance their classic vehicle's power handling capacity, durability, and reliability. Its high-quality cast iron construction, robust bolt pattern, and integrated oil cooler mounting surface make it an indispensable addition to any Dodge enthusiast's toolkit.

Buying a Mopar 978S9 transmission tail housing extension for a 1974 Dodge NP435 can be a viable solution for those looking to upgrade or repair their transmission. Here are some potential pros and cons to consider before making a purchase.

1. Enhanced durability: A tail housing extension can help prevent damage to the transmission housing during off-road use or high-performance driving. It can also provide additional strength to the transmission to handle increased torque and power.

2. Improved clearance: For those with lifted vehicles or larger tires, a tail housing extension can provide the necessary clearance to ensure proper transmission operation and prevent contact with other components.

3. Easy installation: The Mopar 978S9 tail housing extension is specifically designed for use with the NP435 transmission, making the installation process relatively straightforward. It can be installed with common hand tools and does not require any significant modifications to the vehicle.

1. Cost: The Mopar 978S9 tail housing extension can be a significant investment, especially for those on a budget. The cost may be a deterrent for some, particularly if other repairs or modifications are also required.

2. Weight: The tail housing extension adds weight to the rear of the vehicle, which can have an impact on fuel economy and handling. This may be a concern for those looking to maximize performance or fuel efficiency.

3. Limited availability: Depending on the location and availability, it may be difficult to find a reliable source for the Mopar 978S9 tail housing extension. It may be necessary to order it online or from a specialty parts supplier, which can add to the overall cost and wait time.

The decision to purchase a Mopar 978S9 transmission tail housing extension for a 1974 Dodge NP435 ultimately depends on individual needs and priorities. For those who require additional strength, clearance, or durability for their off-road or high-performance applications, the benefits may outweigh the costs. However, for those looking to save on costs or minimize weight, alternative solutions may be more suitable.

If you have determined that a tail housing extension is the best solution for your specific application, it is recommended to purchase a high-quality, OEM part like the Mopar 978S9. This will ensure a proper fit, reliable performance, and ease of installation. It is also recommended to shop around for the best price and availability to minimize costs.

Details:

Good used vintage tail housing. This is in good condition with no cracks or repairs. Safe insured shipping is $18 in the 48. Please see all 4 pictures for condition, style, fitment and what is included or missing.

This is ready to use or perfect for a easy restoration. This one is off a 1974 NP435 that was in Dodge truck.

part #: 978s9 prices

• $219.97-$275.00

specifications manutransmission:

• for makes: Dodge, Mopar
• for years: 1974
• brand: New Process
• mpn: 978s9
• material: Cast Iron
• vintage part: Yes
• type: Tail Housing
• oe/oem part number: Dodge Np435
• manufacturer warranty: 14 Day
• universal fitment: No
• country of origin: United States

general manutransmission:

• condition: Used
• Car Truck Parts Accessories > Transmission Drivetrain > Manual Transmission Parts

shipping manutransmission:

• transit: 4-9 Days
• cost: $18.00
• type: Fixed
• service: Standard
• class: Standard

offer manutransmission:

• sold: 0
• quantity: 1
• started: March 21, 2026
• availability: In Stock
• options: Ship-to-home

payments manutransmission:

• credit card: Mastercard
• other
• wallet: Google-pay

returns manutransmission:

• policy: Returns Accepted
• time: 14 Days
• paid by: Buyer

seller manutransmission:

• rating: 99.7%
• city: Bakersfield, California
• # reviews: 1729

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