Engine Valve Cover Gasket Sets for 1981-1987 Dodge B250 Vans
Fixing that oil leak on your Dodge van's engine starts with choosing the right valve cover gasket.
- Oil leaks from the valve cover are a very common issue on 1981-1987 Dodge B250s due to gasket age.
- Your van has either a Slant-6 (one gasket) or a V8 (two gaskets); make sure you order the correct set for your engine.
- For original stamped steel covers, a quality cork/rubber blend gasket from a brand like Mr. Gasket is a forgiving choice.
- Do not over-tighten the valve cover bolts. This is the most common cause of new leaks after a gasket replacement.
Is Your Dodge B250 Leaking Oil?
A common source of oil leaks on older vehicles like the 1981-1987 Dodge B250 is a worn-out valve cover gasket. Over time, the original gasket, whether it was cork or an early rubber-type, gets hard and brittle from engine heat and age. When this happens, it can no longer create a proper seal, and oil begins to seep out. You might notice a burning oil smell if it drips onto the hot exhaust manifold, or see dark, oily patches on your engine.
Symptoms of a Failing Valve Cover Gasket
- Oily Valve Covers: The most obvious sign is oil residue and grime collected on and around the valve covers.
- Burning Oil Smell: Oil leaking from the valve cover can drip onto the hot exhaust manifold, creating a distinct burning smell 🎬 See how to identify and fix a 360 engine leak. while you drive.
- Visible Oil Drips: You may see oil spots on the ground where you park your van.
- Low Engine Oil: A significant leak can cause your engine oil level to drop between changes, requiring you to top it off frequently.
Choosing the Right Aftermarket Gasket
For a vehicle like the B250, you won't be finding new OEM gaskets from a Dodge dealer. The good news is that the aftermarket offers a wide variety of excellent, and often improved, options. The main choice you will make is the gasket material.
Gasket Material: Cork vs. Rubber
| Material | Pros | Cons |
|---|---|---|
| Cork & Cork/Rubber Blends | - More forgiving on older, stamped-steel valve covers that may not be perfectly flat. - Can swell slightly with oil to help create a better seal. - Often less expensive. |
- Can dry out, crack, and become brittle over time. - Generally considered a single-use item. - Can be easily damaged by over-tightening the valve cover bolts. |
| Molded Rubber/Silicone | - More durable and longer-lasting than cork. - Often reusable, which is great if you adjust your valves periodically. - Resists oil and high temperatures very well. |
- Requires a perfectly clean and flat sealing surface to work correctly. - Can sometimes be more expensive. - May try to slip out of place during installation if not designed with a rigid core. |
Pro Tip: The original valve covers on these Dodge vans are made of stamped steel. They can warp around the bolt holes if they've been over-tightened in the past. Before you install a new gasket, lay the valve cover on a flat surface to check for flatness. You can gently hammer the bolt hole areas flat if they are bent.
Brand Tiers for Your B250
- Good, Reliable Options (Budget-Friendly): Brands like Victor Reinz and Mr. Gasket offer quality replacement gaskets that meet or exceed original specifications. Victor Reinz is known for making soft, pliable rubber gaskets that fit well. Mr. Gasket offers excellent cork/rubber blends that are perfect for older engines.
- Performance/Heavy-Duty Options: Brands like Edelbrock and Cometic are geared more towards high-performance applications but can be used on a stock engine. Edelbrock makes thick, core-reinforced gaskets that provide a great seal. Cometic's multi-layer steel and other advanced gaskets are likely overkill for a stock B250, but are known for their reusability and sealing power in demanding situations.
Estimated Costs for a New Gasket Set
| Item | Estimated Cost |
|---|---|
| New Aftermarket Gasket Set | $32.29 - $70.36 |
| Shop Labor | $100 - $250 |
| New OEM Gasket Set | Not Generally Available |
Costs are estimates and can vary based on your location, engine type (V8 vs. Slant 6) 🎬 Watch: How to install load spreaders on a Slant 6., and the specific brand you choose.
Frequently Asked Questions
Do I need to use sealant with my new gasket?
It depends on the gasket type and manufacturer instructions. Many modern rubber gaskets are designed to be installed dry on clean surfaces. Cork gaskets often benefit from a light application of gasket sealant or adhesive on the valve cover side to hold them in place during installation. A common practice is to apply a small dab of RTV sealant only at the corners or where engine joints meet, but not around the entire gasket.
Which is better for my B250, a cork or rubber gasket?
For the original stamped steel valve covers, a high-quality cork-rubber blend gasket is often a great choice because it's more forgiving of minor surface imperfections. If you have aftermarket cast aluminum valve covers, or if you are certain your original covers are perfectly flat and clean, a modern molded rubber gasket can provide a longer-lasting, reusable seal.
How tight should I tighten the valve cover bolts?
Not very tight at all. The most common mistake is over-tightening, which warps the valve cover and crushes the gasket, causing leaks. The bolts should only be snugged down to a few inch-pounds of torque. Always tighten in a crisscross pattern, starting from the center and working your way out.
My van has a V8. Do I need to replace both gaskets at the same time?
It's highly recommended. If one gasket has failed due to age and heat, the other one is likely in the same condition and will probably start leaking soon. Since you're already buying the parts and have the tools out, it's best to replace them both at once 🎬 Watch: Step-by-step valve cover gasket replacement for Dodge V8 engines. to save time and effort down the road.
Helpful Videos
Technical Specifications
Gasket material will be cork, cork/rubber blend, or molded rubber/silicone. The set required depends on the engine: Chrysler Slant-6 (225ci), LA-series V8 (318ci), or LA-series V8 (360ci).
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Dodge B250: