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HaydenPart #: 391
Hayden 391 Automatic Transmission Oil Cooler Line Connector
94 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Cooler Inst.Kit
Fitment: Jeep and Dodge, TJ, Wrangler, Grand Cherokee, Dakota, Durango, Ram 1500, Ram 2500, Ram 3500, Ramcharger, Cherokee, Comanche, Wagoneer, and J10
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Not what you need? See all Automatic Transmission Oil Cooler Line Connector options
Overview of Hayden Automatic Transmission Oil Cooler Line Connector
The Hayden Cooler Inst.Kit part number 391 is designed for reliable transmission oil cooling line connections. Engineered for select Dodge and Jeep models, this steel connector ensures proper fit and durability in demanding automotive environments.
Key Features of Hayden Part 391
- Constructed from durable steel with a gold finish for corrosion resistance
- Thickness of 0.625 inches and outer diameter of 0.750 inches for precise fit
- Round connector shape with male inlet and outlet genders
- Performance rated for transmission cooling applications
- Compact dimensions: 5.75 inches height and 3.875 inches width
- Designed without bracket and without spring for straightforward installation
- Does not include gaskets or seals
Detailed Product Description
The Hayden Cooler Inst.Kit 391 is an automatic transmission oil cooler line connector crafted from steel with a corrosion-resistant gold finish. It features a round connector shape with male inlet and outlet fittings, designed to maintain secure and leak-free connections in transmission cooling systems. The part measures 5.75 inches in overall height and 3.875 inches in width, with a thickness of 0.625 inches and an outer diameter of 0.750 inches, ensuring compatibility with specific transmission cooler lines. This fitting kit is performance rated and intended for use without brackets or springs, simplifying installation and maintenance.
The Hayden Cooler Inst.Kit product line focuses on providing essential components for transmission and engine cooling system installations. This kit supports professional-grade repairs and upgrades by offering reliable, durable fittings that meet OEM standards for select Dodge and Jeep vehicles.
Compatible Vehicles and Common Applications
- Dodge Ram 1500, 2500, 3500 models
- Dodge Dakota and Durango
- Jeep Cherokee, Comanche, Grand Cherokee, Wagoneer, Wrangler, TJ, and J10
- Dodge Ramcharger
This connector is suitable for transmission oil cooler line installations and replacements on these vehicles, helping to maintain proper transmission fluid temperatures and system integrity.
Installation Notes and Tips
- Ensure transmission cooler lines are clean and free of debris before installation
- Verify male inlet and outlet fittings match existing line sizes
- Use appropriate sealing methods as gaskets and seals are not included
- Check for leaks after installation and during initial operation
- Installation does not require brackets or springs, simplifying the process
Quality Assurance and Warranty
Hayden parts, including the Cooler Inst.Kit 391, are manufactured to meet industry standards for durability and performance. This product is performance rated for transmission cooling applications. Please consult Hayden or authorized distributors for specific warranty details related to this part number.
| Brand | Hayden |
|---|---|
| Part Number | 391 |
| Position | Cooler Inst.Kit |
| Bracket? | w/o Bracket |
| Connector Shape | Round |
| Contains Spring? | No |
| Description | Oil Cooler Install Kit |
| Electric Fan | No |
| Friction Material Thickness | Gold |
| Gasket / Seals? | Not Included |
| Inlet Gender | Male |
| Material | Steel |
| O.D. IN | 0.750 |
| O.E. Replacement? | No |
| Outlet Gender | Male |
| Overall Height IN | 5.750 |
| Overall Height MM | 146.05 |
| Overall Width IN | 3.875 |
| Overall Width MM | 38.1 |
| Overall Width MM | 98.3996 |
| Performance Rated? | Yes |
| Style | Fitting Kit |
| Thickness | 0.625 |
| Type | Transmission |
| Weight LBS | 0.110 |
This part fits 94 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2006 | Jeep | TJ | 4.0L | L6 | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit |
| 2006 | Jeep | Wrangler | 4.0L | L6 | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit |
| 2005 | Jeep | TJ | 4.0L | L6 | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit |
| 2005 | Jeep | Wrangler | 4.0L | L6 | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit |
| 2004 | Jeep | Grand Cherokee | 4.0L | L6 | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit |
| 2004 | Jeep | TJ | 4.0L | L6 | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit |
| 2004 | Jeep | Wrangler | 4.0L | L6 | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit |
| 2003 | Dodge | Dakota | 5.9L | V8 | N/A | Use on vehicles w/ 5/8"-18 S.A.E 45 degree fittings; Cooler Inst.Kit |
| 2003 | Dodge | Durango | 5.9L | V8 | N/A | Use on vehicles w/ 5/8"-18 S.A.E 45 degree fittings; Cooler Inst.Kit |
| 2003 | Dodge | Ram 1500 | 5.9L | V8 | N/A | Use on vehicles w/ 5/8"-18 S.A.E 45 degree fittings; Cooler Inst.Kit |
| 2003 | Jeep | Grand Cherokee | 4.0L | L6 | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit |
| 2003 | Jeep | TJ | 4.0L | L6 | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit |
| 2003 | Jeep | Wrangler | 4.0L | L6 | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit |
| 2002 | Dodge | Dakota | 5.9L | V8 | N/A | Use on vehicles w/ 5/8"-18 S.A.E 45 degree fittings; Cooler Inst.Kit |
| 2002 | Dodge | Durango | 5.9L | V8 | N/A | Use on vehicles w/ 5/8"-18 S.A.E 45 degree fittings; Cooler Inst.Kit |
| 2002 | Dodge | Ram 1500 | 5.9L | V8 | N/A | Use on vehicles w/ 5/8"-18 S.A.E 45 degree fittings; Cooler Inst.Kit |
| 2002 | Dodge | Ram 2500 | 5.9L | V8 | N/A | Use on vehicles w/ 5/8"-18 S.A.E 45 degree fittings; Cooler Inst.Kit |
| 2002 | Dodge | Ram 3500 | 5.9L | V8 | N/A | Use on vehicles w/ 5/8"-18 S.A.E 45 degree fittings; Cooler Inst.Kit |
| 2002 | Jeep | Grand Cherokee | 4.0L | L6 | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit |
| 2002 | Jeep | TJ | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 2002 | Jeep | Wrangler | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 2001 | Dodge | Dakota | 5.9L | V8 | N/A | Use on vehicles w/ 5/8"-18 S.A.E 45 degree fittings; Cooler Inst.Kit |
| 2001 | Dodge | Durango | 5.9L | V8 | N/A | Use on vehicles w/ 5/8"-18 S.A.E 45 degree fittings; Cooler Inst.Kit |
| 2001 | Dodge | Ram 1500 | 5.2L | V8 | N/A | Use on vehicles w/ 5/8"-18 S.A.E 45 degree fittings; Cooler Inst.Kit |
| 2001 | Dodge | Ram 1500 | 5.9L | V8 | N/A | Use on vehicles w/ 5/8"-18 S.A.E 45 degree fittings; Cooler Inst.Kit |
| 2001 | Dodge | Ram 2500 | 5.2L | V8 | N/A | Use on vehicles w/ 5/8"-18 S.A.E 45 degree fittings; Cooler Inst.Kit |
| 2001 | Dodge | Ram 2500 | 5.9L | V8 | N/A | Use on vehicles w/ 5/8"-18 S.A.E 45 degree fittings; Cooler Inst.Kit |
| 2001 | Dodge | Ram 3500 | 5.9L | V8 | N/A | Use on vehicles w/ 5/8"-18 S.A.E 45 degree fittings; Cooler Inst.Kit |
| 2001 | Dodge | Ramcharger | N/A | Use on vehicles w/ 5/8"-18 S.A.E 45 degree fittings; Cooler Inst.Kit | ||
| 2001 | Jeep | Cherokee | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 2001 | Jeep | Grand Cherokee | 4.0L | L6 | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit |
| 2001 | Jeep | TJ | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 2001 | Jeep | Wrangler | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 2000 | Dodge | Dakota | 5.9L | V8 | N/A | Use on vehicles w/ 5/8"-18 S.A.E 45 degree fittings; Cooler Inst.Kit |
| 2000 | Dodge | Durango | 5.2L | V8 | N/A | Use on vehicles w/ 5/8"-18 S.A.E 45 degree fittings; Cooler Inst.Kit |
| 2000 | Dodge | Durango | 5.9L | V8 | N/A | Use on vehicles w/ 5/8"-18 S.A.E 45 degree fittings; Cooler Inst.Kit |
| 2000 | Dodge | Ram 1500 | 5.2L | V8 | N/A | Use on vehicles w/ 5/8"-18 S.A.E 45 degree fittings; Cooler Inst.Kit |
| 2000 | Dodge | Ram 1500 | 5.9L | V8 | N/A | Use on vehicles w/ 5/8"-18 S.A.E 45 degree fittings; Cooler Inst.Kit |
| 2000 | Dodge | Ram 2500 | 5.2L | V8 | N/A | Use on vehicles w/ 5/8"-18 S.A.E 45 degree fittings; Cooler Inst.Kit |
| 2000 | Dodge | Ram 2500 | 5.9L | V8 | N/A | Use on vehicles w/ 5/8"-18 S.A.E 45 degree fittings; Cooler Inst.Kit |
| 2000 | Dodge | Ram 3500 | 5.9L | V8 | N/A | Use on vehicles w/ 5/8"-18 S.A.E 45 degree fittings; Cooler Inst.Kit |
| 2000 | Dodge | Ramcharger | N/A | Use on vehicles w/ 5/8"-18 S.A.E 45 degree fittings; Cooler Inst.Kit | ||
| 2000 | Jeep | Cherokee | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 2000 | Jeep | Grand Cherokee | 4.0L | L6 | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit |
| 2000 | Jeep | TJ | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 2000 | Jeep | Wrangler | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1999 | Jeep | Cherokee | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1999 | Jeep | Grand Cherokee | 4.0L | L6 | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit |
| 1999 | Jeep | TJ | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1999 | Jeep | Wrangler | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1998 | Jeep | Cherokee | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1998 | Jeep | Grand Cherokee | 4.0L | L6 | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit |
| 1998 | Jeep | TJ | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1998 | Jeep | Wrangler | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1997 | Jeep | Cherokee | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1997 | Jeep | Grand Cherokee | 4.0L | L6 | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit |
| 1997 | Jeep | TJ | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1997 | Jeep | Wrangler | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1996 | Jeep | Cherokee | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1996 | Jeep | Grand Cherokee | 4.0L | L6 | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit |
| 1995 | Jeep | Cherokee | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1995 | Jeep | Grand Cherokee | 4.0L | L6 | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit |
| 1995 | Jeep | Wrangler | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1994 | Jeep | Cherokee | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1994 | Jeep | Grand Cherokee | 4.0L | L6 | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit |
| 1994 | Jeep | Wrangler | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1993 | Jeep | Cherokee | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1993 | Jeep | Grand Cherokee | 4.0L | L6 | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit |
| 1993 | Jeep | Wrangler | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1992 | Jeep | Cherokee | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1992 | Jeep | Comanche | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1992 | Jeep | Wrangler | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1991 | Jeep | Cherokee | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1991 | Jeep | Comanche | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1991 | Jeep | Wrangler | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1990 | Jeep | Cherokee | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1990 | Jeep | Comanche | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1990 | Jeep | Wagoneer | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1990 | Jeep | Wrangler | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1989 | Jeep | Cherokee | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1989 | Jeep | Comanche | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1989 | Jeep | Wagoneer | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1989 | Jeep | Wrangler | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1988 | Jeep | Cherokee | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1988 | Jeep | Comanche | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1988 | Jeep | Wagoneer | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1988 | Jeep | Wrangler | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1987 | Jeep | Cherokee | 4.0L | L6 | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit |
| 1987 | Jeep | Cherokee | 2.5L | L4 | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit |
| 1987 | Jeep | Comanche | 4.0L | L6 | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit |
| 1987 | Jeep | Comanche | 2.5L | L4 | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit |
| 1987 | Jeep | J10 | 4.2L | L6 | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit |
| 1987 | Jeep | Wagoneer | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit | ||
| 1987 | Jeep | Wrangler | N/A | Transmission Line Fitting Kit; Use on vehicles w/ 3/8" x 3/8" Hose splicers.; Cooler Inst.Kit |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
03911115301015405071751819187688240391279831391530107503379831900391CWK900391
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.