Subaru Forester Engine Valve Cover Gasket Guide for 2012-2023 Models
That burning oil smell is a classic sign your Forester's valve cover gaskets are leaking.
- A burning oil smell is the most reliable indicator of a leaking valve cover gasket on a Forester.
- Always choose a high-quality aftermarket brand like Victor Gaskets or Beck Arnley for a lasting repair on the hot boxer engine.
- The replacement kit must include spark plug tube seals; replacing them is mandatory for a complete job.
- Proper cleaning of the surfaces and using sealant only in the specified corners are critical for a leak-free installation.
Is Your Forester Leaking Oil?
A leaking valve cover gasket is one of the most common oil leaks on a 2012-2023 Subaru Forester. Because of the flat "boxer" engine design, the valve covers sit on the sides of the engine, directly above the hot exhaust manifolds. When the gaskets get old and brittle, oil drips onto the exhaust, creating a distinct and unpleasant burning oil smell in the cabin. This is the number one symptom of a failed gasket.
Symptoms of a Failing Valve Cover Gasket
- Burning Oil Smell: Oil dripping onto the hot exhaust is the most obvious sign.
- Visible Oil Leaks: You might see oil residue on the sides of the engine or small drips on the ground.
- Oil in Spark Plug Wells: A leaking spark plug tube seal (part of the gasket set) can cause oil to pool around the spark plugs, leading to misfires.
- Low Engine Oil: A significant leak will cause your engine oil level to drop over time.
Known Issues & Recalls
There are no specific recalls for valve cover gaskets on these models. However, a recall (NHTSA ID: 19V-856) was issued for some 2019 Foresters for a faulty PCV valve that could cause oil consumption issues. While not directly the gasket, it relates to the engine's oil system. The tendency for these gaskets to leak is a well-known issue due to the boxer engine's design and heat cycles.
Choosing the Right Aftermarket Gasket Set
For a Subaru boxer engine, the quality of the gasket matters. The constant exposure to heat means a cheap, poorly made gasket will likely fail again quickly. You don't have to buy from the dealer, but you should choose a reputable aftermarket brand.
Brand Quality Tiers
When shopping for a replacement, consider these brands which offer reliable performance for your Forester:
- OEM-Equivalent Quality (Recommended): Brands like Victor Gaskets (Victor Reinz) and Beck Arnley are excellent choices. Victor Reinz is a well-respected manufacturer and often an Original Equipment (OE) supplier for European cars. Beck Arnley specializes in sourcing parts that match the original form, fit, and function, often re-packaging the actual OE part. You can trust these brands for a durable repair.
- High-Performance Option: Cometic Gasket is known for producing high-performance gaskets, often using multi-layer steel (MLS) technology. While potentially overkill for a stock daily-driven Forester, their products are extremely durable and offer superior sealing, making them a fantastic, long-lasting choice if they fit your budget.
Pro Tip: The kit should always include the main valve cover gaskets and the round spark plug tube seals. It is critical to replace the tube seals at the same time to prevent oil from leaking into the spark plug tubes and causing misfires.
🎬 See how to diagnose and fix leaking spark plug tube seals.Cost of Replacing a Valve Cover Gasket Set
The cost can vary based on your location and whether you do the work yourself or use a professional mechanic.
| Part/Service | Estimated Cost | Notes |
|---|---|---|
| New Aftermarket Gasket Set | $20 - $75 | Price depends on the brand and kit contents. |
| Shop Labor | $210 - $450 | Labor can take 2-4 hours. Access is tight, especially on the driver's side. | 🎬 Watch this guide for accessing the tight driver's side gasket.
| Total Professional Replacement | $230 - $525 | An average professional repair cost. |
Frequently Asked Questions (FAQ)
Can I replace the valve cover gaskets myself?
Yes, this is a DIY-feasible job for an experienced home mechanic. 🎬 Watch this DIY walkthrough for non-turbo gasket and spark plug replacement. However, access is very tight on the boxer engine. The driver's side requires removing the battery, and the passenger side requires removing the air intake box. You will need a good set of tools, including various extensions and a swivel socket for the hard-to-reach bolts. If you are new to auto repair, this job can be very frustrating.
Do I need to use sealant (RTV) on the new gaskets?
Yes, but only in specific spots. A small dab of oil-resistant RTV sealant (often called FujiBond or HondaBond in Subaru circles) is required where the timing cover meets the cylinder head and at any other sharp corners. Do not coat the entire gasket in sealant. The new gasket is designed to seal by itself in the channel.
Why is my new valve cover gasket leaking?
The most common reasons for a new gasket to leak are improper surface preparation or incorrect installation. The mating surfaces on both the engine and the valve cover must be perfectly clean and free of old gasket material and oil. Also, the cover bolts must be tightened to the correct torque specification in the proper sequence to ensure even pressure.
Does this repair differ between the 2.5L and 2.0L Turbo (XT) engines?
Yes, the procedure and the parts are different. The 2014-2018 Forester XT uses the FA20DIT turbo engine, which has a different valve cover and gasket design than the standard 2.5L FB25 engine found in most Foresters. Always confirm your engine type when ordering parts.
Helpful Videos
Technical Specifications
OEM Part Numbers: 13294AA070 13272AA170 13270AA240 10966AA043 13272AA180 13270AA250
Kit typically includes two main valve cover gaskets (left and right), four spark plug tube seals, and bolt grommets. Material is typically a high-temperature molded rubber.
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.
- Subaru Forester: