Lube Locker Dana 44 Differential Cover Gasket Llr D044: Install Guide

Updated November 2026

A lube locker Dana 44 differential cover gasket, often sold under the part number LLR D044, is the seal that keeps gear oil in the axle housing and dirt out. This guide walks through confirming you have the right gasket, preparing the cover and housing surfaces, installing the seal, and refilling the fluid correctly. Work on a level surface with the vehicle safely supported.

Confirm You Have the Right Gasket

Before pulling the cover, match the gasket to your axle. Dana 44 covers come in several bolt patterns and cover shapes depending on model year and whether the axle is front or rear. Check the part number stamped on the old gasket or the cover flange, and compare it against the LLR D044 listing. If the old gasket is torn or flattened, measure the bolt hole spacing on the cover and compare it to the new part before you buy extra supplies.

Shopping for one? See our guide: ARB Air Locker Differential Review (2026).

Drain and Remove the Cover

Place a drain pan under the axle and remove the fill plug first so the housing can vent as fluid drains. Then remove the drain plug and let the oil run out completely. Once drained, loosen the cover bolts in a crisscross pattern, working each one a half turn at a time to avoid warping the cover. Lift the cover off and note where any magnets or vent components sit.

Clean and Prepare the Sealing Surfaces

A gasket only seals as well as the surfaces under it. Scrape the old gasket material from both the housing flange and the cover using a plastic scraper or a nylon abrasive pad. Metal scrapers can gouge the flange, which leads to leaks later. Wipe both surfaces with brake cleaner or a lint-free rag and let them dry fully. Check the flange for nicks or deep scratches, and smooth any high spots lightly with a fine file.

Preparation Checklist

1. Drain the housing completely and inspect the fluid for metal shavings.
2. Remove all old gasket residue from the housing and cover.
3. Clean the bolt holes and check that threads are not stripped.
4. Confirm the new gasket lies flat on the housing without stretching.
5. Have fresh gear oil and a fill pump ready before you start the install.

Install the New Gasket and Cover

Set the new LLR D044 gasket onto the housing flange, aligning the bolt holes first. Most gaskets are installed dry unless the manufacturer specifies a thin film of sealant on the flange. Follow the instructions included with your gasket, and avoid using extra sealant unless it is called for, since excess can squeeze into the gear compartment. Set the cover in place and start all bolts by hand. Tighten them in a crisscross pattern to the torque value listed in your service manual, usually in stages, so the gasket compresses evenly.

Refill and Check the Fluid Level

Add gear oil through the fill port until the fluid reaches the bottom edge of the fill hole. Manufacturers specify the lubricant type and capacity for Dana 44 axles, so check the service information for your model before you pour. Reinstall the fill plug and drain plug, tightening them to specification. Drive the vehicle a short distance, then park and inspect the cover and plugs for seepage. Recheck the fluid level after a day or two of driving, since the gasket may settle slightly.

Recommended gear

• Plastic gasket scraper set: Removes old gasket material without scratching the aluminum or steel flange. View on Amazon
• Gear oil fill pump: Makes it easier to add the correct fluid level through the fill port without spills. View on Amazon
• Brake cleaner spray: Degreases both sealing surfaces so the new gasket bonds evenly. View on Amazon

Common Mistakes

• Skipping the cleaning step, which leaves old gasket fragments that cause leaks.
• Tightening the cover bolts in sequence instead of crisscross, which can warp the cover.
• Overfilling the housing, which can push fluid past the seals.
• Using sealant on a gasket that the manufacturer says to install dry.
• Ignoring metal debris in the drained oil, which may point to gear or bearing wear.

If you are also replacing a locker or planning a larger axle job, see Dana 44 Differential Locker: A Step-by-Step Guide to Choosing and Installing One for setup details. Owners doing the same work on other axles can compare steps in Lube Locker Ford 9 Differential Gasket: Step-by-Step Install Guide and Lube Locker Dana 60 Differential Gasket: Step-by-Step Install Guide.

FAQ

What does LLR D044 refer to?

LLR D044 is a part number used for a lube locker gasket that fits Dana 44 differential covers. Always compare the listing to your existing gasket or cover before installing.

Can I reuse the old gasket?

Reusing an old gasket is not recommended because it rarely seals well after compression. A new gasket costs little compared with the labor of a repeat leak repair.

How often should Dana 44 gear oil be changed?

Many owners follow the interval in their vehicle service manual, and heavy off-road use may call for more frequent checks. If you are unsure about your specific axle, consult a qualified mechanic or service professional.

Conclusion

A properly chosen and installed lube locker Dana 44 differential cover gasket keeps gear oil sealed and your axle protected. Clean both surfaces thoroughly, tighten bolts in a crisscross pattern, and refill to the correct level. Recheck for leaks after the first few drives.

Related reading

• Toyota 8.4 Differential Locker: Fit, Options and Install Notes
• S10 Front Differential Locker: Options, Fit and Install Steps (2026)
• Rear Differential Locker for Dodge Ram 1500: Types, Fit and Install Steps

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