1981 Porsche 911 Differentials
Keep Your 1981 Porsche 911 in Top Shape with Quality Differentials
Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1981 Porsche 911 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Oil, Differential Pinion Pilot Bearings, and Pinion Shaft Seals. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.
Top-Rated Differentials from Trusted Brands
Looking for a reliable Differential? We’ve got you covered with options from brands you know and trust like National and Valvoline. For example, National Differentials start at just $16.99 with an average 4.3 star rating. Valvoline offer similar pricing and quality, backed by strong customer feedback. With over 472 reviews and a solid 5 star average, you can shop with confidence knowing other Porsche 911 owners approve.
Competitive Prices and Extensive Inventory
The average price for a 1981 Porsche 911 Differential at Advance Auto Parts is around $26.99, with a range that starts at $11.99 and goes up to $39.99. With 6 options in stock from 3 trusted brands, finding the right fit is easy. Popular picks like Multi-Purpose Seal, Shaft Repair Sleeve, and Tapered Roller Bearing start at just $11.99 and offer a great balance of form and function.
Explore Related Parts
While you’re upgrading or replacing your Differential, don’t forget to check out other key components like . At Advance Auto Parts, we’re here to help you keep your 1981 Porsche 911 in peak condition, inside and out.
Find Your Specific 1981 Porsche 911 Differentials
Looking for the perfect Differential for your 1981 Porsche 911? You’re in the right place. Below, you’ll find links to various types of Differentials that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Differentials, ensuring durability and a precise fit for your Porsche 911. Whether you’re driving a 1981 model or another popular model year like
2001,
2002,
2003,
2004,
2005,
2006,
2007,
2008, and
2009, we’ve got you covered. Purchasing Differentials from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Differentials that fit your vehicle.
Essential 1981 Porsche 911 Differentials
National – Shaft Repair Sleeve (Part No.99114)
from
$27.99
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.
Product Features:
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Product Features:
- Designed to repair damaged, grooved or worn shafts
- Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
- Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
- Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
- Easy to install with removable flange and installation tool
Valvoline – Import Multi-Vehicle Synthetic Automatic Transmission Fluid, 1 Quart (Part No.822389)
from
$13.99
Valvoline Import Multi-Vehicle Automatic Transmission Fluid is specifically formulated for use in most Toyota, Nissan, Honda and other imported vehicles. It is formulated with all synthetic base stocks and a proprietary additive system to ensure optimal transmission performance in a wide variety of vehicles. Valvoline Import Multi-Vehicle ATF can also be used in many domestic vehicles. It meets requirements of General Motors and Ford vehicles. Recommended for use in the following applications: Ford MERCON, GM DEXRON-II and DEXRON-III, BMW LT 71141 and ETL-7045E, Nissan/Infiniti Nissan ATF, Matic-D, Matic-K and Matic-J, Mitsubishi Diamond SP-II and SP-III, Subaru ATF-HP, Hyundai/ KIA SP-II and SP-III, Toyota/Lexus Type T, T-III and T-IV, Honda/Acura ATF-Z1 (except in CVTs), Mercedes Benz NAG1, Volvo passenger car (except AW-1), and Volkswagen/Audi TL52162. For CVT applications Valvoline recommends Valvoline Full Synthetic CVT Fluid.
Product Features:
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Product Features:
- Formulated with full-synthetic base stocks and advanced additive technology to meet the challenging demands of automatic transmissions
- Enhanced anti-shudder protection for smooth shifting and maximum power transfer
- Developed with anti-wear technology to help improve transmission durability
- Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures
Valvoline – MaxLife Multi-Vehicle Automatic Transmission Fluid, 1 Gallon (Part No.773775)
from
$35.99
Valvoline MaxLife Multi-Vehicle ATF is a full-synthetic formulation with advanced additives to prevent the major causes of transmission breakdown and help extend transmission life. Developed to help prevent leaks, maximize transmission performance, reduce transmission wear, and maintain smooth shifting longer than conventional fluids. It is suitable for use in a broad range of ATF applications including most Ford, GM, Toyota, Honda, Nissan, Hyundai, BMW, Mercedes, Volvo, VW & Audi. Recommended for use in the following applications: GM DEXRON-II, DEXRON-III, DEXRON-VI, Ford MERCON LV, Toyota/Lexus Type T, T-II, T-IV, WS, Honda/Acura, ATF-Z1, Nissan/Infiniti Matic-D, Matic-J, Matric-K, Matic-S, Hyundai/Kia SP-II, SP-III, SP-IV, SPH-IV, BMW 7045E, ETL 8072B, LA2634, LT71141, Allison C-4, Mercedes Benz NAG-1, Volvo 1161521, 1161540, 97340, 1273.41, and VW/Audi G-052-025-A2, G-052-162-A1. For CVT applications Valvoline recommends Valvoline Full Synthetic CVT Fluid.
Product Features:
See More
Product Features:
- Formulated with full-synthetic base oils and long life friction modifiers to help improve smooth shifting, eliminate slippage and shudder, prevent clutch wear and improve drivability longer than conventional fluids
- High-performance seal conditioners maintain and preserve the elasticity of seals to help prevent leaks in high mileage transmissions
- Developed with anti-wear technology to help improve transmission durability
- Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures
Driveworks – Tapered Roller Bearing (Part No.S-32010X)
National – Multi-Purpose Bearing (Part No.30210)
from
$52.99
Product Features:
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- CONSISTENT PERFORMANCE: Matched cup and cone components ensure consistent performance
- PREMIUM MATERIALS: Precision manufactured using high-quality materials for durability and performance
- OE-STYLE DESIGN: Engineered to meet OE specifications
- COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
- RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on
National – Tapered Roller Bearing Cone (Part No.LM806649)
from
$58.99
Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.
Product Features:
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Product Features:
- PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
- SMOOTH ROTATION – Crowned raceways and rollers for even load distribution
- OE-STYLE DESIGN – Engineered to meet OE specifications
- COMPREHENSIVE COVERAGE – Industry-leading coverage for domestic and import applications
- RIGOROUS TESTING – Comprehensive testing throughout design and development processes by National engineers for quality you can count on
Schaeffler – Bearing – TRB (Tapered Roller Bearing) (Part No.KT37)
from
$28.49
With advanced load-carrying capacity and compact design, tapered roller bearings are used in wheel bearings, transmissions, differentials, transfer cases and other miscellanous applications. FAG manufacturers over 100 million tapered roller bearings annually.
Product Features:
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Product Features:
- High-precision and High-quality components used in all KITs
- Coverage of classic and new high-tech solutions for the best system coverage
Driveworks – Taper Bearing Cup (Part No.S-LM-300811)
from
$5.99
Value-priced bearing meets all cataloged application requirements.
Product Features:
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Product Features:
- Brand may vary by location
National – Bearing Race (Part No.JLM104910)
from
$10.99
Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.
Product Features:
See More
Product Features:
- PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
- SMOOTH ROTATION – Crowned raceways for even load distribution
- OE-STYLE DESIGN – Engineered to meet OE specifications
- COMPREHENSIVE COVERAGE – Industry-leading coverage for domestic and import applications
- RIGOROUS TESTING – Comprehensive testing throughout design and development processes by National engineers for quality you can count on
Schaeffler – Cup (Part No.JLM104910)
from
$11.99
With advanced load-carrying capacity and compact design, tapered roller bearings are used in wheel bearings, transmissions, differentials, transfer cases and other miscellanous applications. FAG manufacturers over 100 million tapered roller bearings annually.
Product Features:
See More
Product Features:
- High-precision and High-quality components used in all KITs
- Coverage of classic and new high-tech solutions for the best system coverage
National – Multi-Purpose Bearing (Part No.A-6)
from
$16.99
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.
Product Features:
See More
Product Features:
- CONSISTENT PERFORMANCE — Matched cup and cone components ensure consistent performance
- PREMIUM MATERIALS — Precision manufactured using premium-grade steel for outstanding durability and performance
- SMOOTH ROTATION — Crowned raceways and rollers for even load distribution
- OE-STYLE DESIGN — Engineered to meet OE specifications
- COMPREHENSIVE COVERAGE — Industry-leading coverage for domestic and import applications
- RIGOROUS TESTING — Comprehensive testing throughout design and development processes by National engineers for quality you can count on
National – Multi-Purpose Seal (Part No.224520)
from
$11.99
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.
Product Features:
See More
Product Features:
- Design type: spring loaded; single-lip
- Temperature range: -40 Deg. F to 225 Deg. F / -40 Deg. C to 107 Deg. C
- Good low temperature capability
- Low swell in hydrocarbon fluids
- Delivers quality and reliable performance for every type of repair
Driveworks – Camshaft Seal (Part No.S-99139)
National – Shaft Repair Sleeve (Part No.99177)
from
$39.99
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.
Product Features:
See More
Product Features:
- Designed to repair damaged, grooved or worn shafts
- Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
- Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
- Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
- Easy to install with removable flange and installation tool
Popular 1981 Porsche 911 Differentials Categories
Most Popular Differential Oil for 1981 Porsche 911s
Enhance your 1981 Porsche 911 with this popular Differential Oil we have in stock, for $35.99.
Valvoline – MaxLife Multi-Vehicle Automatic Transmission Fluid, 1 Gallon (Part No.773775)
from
$35.99
Valvoline MaxLife Multi-Vehicle ATF is a full-synthetic formulation with advanced additives to prevent the major causes of transmission breakdown and help extend transmission life. Developed to help prevent leaks, maximize transmission performance, reduce transmission wear, and maintain smooth shifting longer than conventional fluids. It is suitable for use in a broad range of ATF applications including most Ford, GM, Toyota, Honda, Nissan, Hyundai, BMW, Mercedes, Volvo, VW & Audi. Recommended for use in the following applications: GM DEXRON-II, DEXRON-III, DEXRON-VI, Ford MERCON LV, Toyota/Lexus Type T, T-II, T-IV, WS, Honda/Acura, ATF-Z1, Nissan/Infiniti Matic-D, Matic-J, Matric-K, Matic-S, Hyundai/Kia SP-II, SP-III, SP-IV, SPH-IV, BMW 7045E, ETL 8072B, LA2634, LT71141, Allison C-4, Mercedes Benz NAG-1, Volvo 1161521, 1161540, 97340, 1273.41, and VW/Audi G-052-025-A2, G-052-162-A1. For CVT applications Valvoline recommends Valvoline Full Synthetic CVT Fluid.
Product Features:
See More
Product Features:
- Formulated with full-synthetic base oils and long life friction modifiers to help improve smooth shifting, eliminate slippage and shudder, prevent clutch wear and improve drivability longer than conventional fluids
- High-performance seal conditioners maintain and preserve the elasticity of seals to help prevent leaks in high mileage transmissions
- Developed with anti-wear technology to help improve transmission durability
- Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures
Best-Selling 1981 Porsche 911 Differential Pinion Pilot Bearing
Upgrade your 911 with our best-selling Differential Pinion Pilot Bearing with a 5 Starts rating across 1 review.
National – Shaft Repair Sleeve (Part No.99177)
from
$39.99
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.
Product Features:
See More
Product Features:
- Designed to repair damaged, grooved or worn shafts
- Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
- Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
- Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
- Easy to install with removable flange and installation tool
Top-Quality Pinion Shaft Seals for 1981 Porsche 911s
Choose a high-quality OEM or aftermarket Pinion Shaft Seal for Porsche 911s and enjoy top-notch performance from $27.99.
National – Shaft Repair Sleeve (Part No.99114)
from
$27.99
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.
Product Features:
See More
Product Features:
- Designed to repair damaged, grooved or worn shafts
- Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
- Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
- Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
- Easy to install with removable flange and installation tool
Our Top Pick for a 1981 Porsche 911 Differential Seal
Invest in a
durable Differential Seal for your 1981 Porsche, knowing you’re getting trusted brands and expert craftsmanship.
National – Multi-Purpose Seal (Part No.224520)
from
$11.99
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.
Product Features:
See More
Product Features:
- Design type: spring loaded; single-lip
- Temperature range: -40 Deg. F to 225 Deg. F / -40 Deg. C to 107 Deg. C
- Good low temperature capability
- Low swell in hydrocarbon fluids
- Delivers quality and reliable performance for every type of repair
Top-Rated Differential Bearings for 1981 Porsche 911s
Make a smart move for your 1981 Porsche 911 with products all priced from $16.99 to $28.99.
National – Multi-Purpose Bearing (Part No.A-6)
from
$16.99
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.
Product Features:
See More
Product Features:
- CONSISTENT PERFORMANCE — Matched cup and cone components ensure consistent performance
- PREMIUM MATERIALS — Precision manufactured using premium-grade steel for outstanding durability and performance
- SMOOTH ROTATION — Crowned raceways and rollers for even load distribution
- OE-STYLE DESIGN — Engineered to meet OE specifications
- COMPREHENSIVE COVERAGE — Industry-leading coverage for domestic and import applications
- RIGOROUS TESTING — Comprehensive testing throughout design and development processes by National engineers for quality you can count on
Driveworks – Tapered Roller Bearing (Part No.S-32010X)
Top-Rated Differential Brands For Your 1981 Porsche 911
When it comes to finding the perfect Differential for your 1981 Porsche 911, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 3 trusted brands. We carry the most popular Differential brands including Valvoline and National, and more, all known for their exceptional customer ratings (average brand rating of 4.8 stars) and competitive prices, as low as $16.99. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1981 Porsche 911, providing peace of mind with parts that meet or exceed OEM standards.
Popular Valvoline 1981 Porsche 911 Differentials
If you’re looking for a top-quality Differential for your 1981 Porsche 911, Advance Auto Parts has exactly what you need with our selection of Valvoline Differentials. We have 1 Valvoline Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $35.99, you’ll find the perfect Differential for your needs and budget. Valvoline Differentials for the 1981 Porsche 911 come highly rated, with over 446 customer reviews and an impressive average rating of 4.8 stars. Choosing a Valvoline Differential from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
from
$35.99
(446)
MaxLife Multi-Vehicle Automatic Transmission Fluid, 1 Gallon
“Good quality great price”
Top-Quality National 1981 Porsche 911 Differentials
For those in search of a high-quality Differential for their 1981 Porsche 911, Advance Auto Parts offers a great selection of National Differentials. With 2 National Differentials in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Differentials start at just $16.99, with an average price of $28.49, giving you a range of options to suit your budget. Backed by over 26 customer ratings and an average rating of 4.3 stars, National Differentials provide both reliability and excellent performance. Choosing a National Differential from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
from
$39.99
(1)
Shaft Repair Sleeve
“Easy to use, too early to tell how long it will last. It did stop the oil leak with a new oil seal on the front crankshaft pulley. 87 mercedes 300td.”
FAQs for 1981 Porsche 911 Differentials
What are the best-selling Differentials for 1981 Porsche 911s?
Out of 6 Differentials that fit 1981 Porsche 911s, the following parts are the top sellers:
- Multi-Purpose Seal (3267504) – $11.99
- Shaft Repair Sleeve (18445079) – $27.99
- Tapered Roller Bearing (11327455) – $28.99
What’s the price range for 1981 Porsche 911 Differentials?
The prices of Differentials for the 1981 Porsche 911 range from $11.99 up to $39.99 for the most premium parts.
What is the average price of a Differential for a 1981 Porsche 911?
The average price for Differentials for the 1981 Porsche 911 is $26.99. Keep in mind the variety of part types within our Differential category, where you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Differentials for other Porsche 911 model years?
What are the cheapest Differentials for my 1981 Porsche 911?
The cheapest 1981 Porsche 911 Differentials we carry are:
- Multi-Purpose Seal (3267504) – $11.99
- Multi-Purpose Bearing (3275973) – $16.99
- Shaft Repair Sleeve (18445079) – $27.99
- Tapered Roller Bearing (11327455) – $28.99
- MaxLife Multi-Vehicle Automatic Transmission Fluid, 1 Gallon (8150020) – $35.99
Does Advance Auto Parts sell Differentials for any other 1981 Porsche models?
Yes. We stock Differentials for 1 other popular 1981 Porsche models. Some of the most popular are 1981 928 Differentials and 1981 924 Differentials.
What are the top-rated Differentials that fit the 1981 Porsche 911?
Based on 472 reviews by customers, our 1981 Porsche 911 Differentials have an average customer rating of 5 stars. These are the highest-rated categories of Differentials for the 1981 Porsche 911 and their top-rated products:
- Differential Oil
- MaxLife Multi-Vehicle Automatic Transmission Fluid, 1 Gallon (8150020) – $35.99
- Differential Pinion Pilot Bearings
- Shaft Repair Sleeve (3271730) – $39.99
What types of Differentials do you sell for my 1981 Porsche 911?
As of 3/1/26, these are some of the most in-demand types of Differentials for a 1981 Porsche 911:
Can I get help with 1981 Porsche 911 Differential orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Porsche Differentials and more.
What is your return policy for Porsche 911 Differentials?
Advance Auto Parts keeps returns simple. For new Porsche 911 Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.