1981 Pontiac Catalina Engine Additives
Keep Your 1981 Pontiac Catalina in Top Shape with Quality Engine Additives
Whether you’re repairing or upgrading your Engine Additive, using high-quality parts is key to keeping your 1981 Pontiac Catalina looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Posi Units and Components. 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.
Competitive Prices and Extensive Inventory
The average price for a 1981 Pontiac Catalina Engine Additive at Advance Auto Parts is around $412.59, with a range that starts at $26.99 and goes up to $1,020.00. With 10 options in stock from 5 trusted brands, finding the right fit is easy. Popular picks like Spartan Spring & Pin Kit, Fits Smaller Designs, Lock Right Locker, and 8.5" Oldsmobile 31Spline 12 Bolt (Factory 3.08 Or 3.23, Or Richmond Gear Ring & Pinions) start at just $26.99 and offer a great balance of form and function.
Explore Related Parts
While you’re upgrading or replacing your Engine Additive, don’t forget to check out other key components like Coolant/Antifreeze and Fluids. At Advance Auto Parts, we’re here to help you keep your 1981 Pontiac Catalina in peak condition, inside and out.
Find Your Specific 1981 Pontiac Catalina Engine Additives
Looking for the perfect Engine Additive for your 1981 Pontiac Catalina? You’re in the right place. Below, you’ll find links to various types of Engine Additives that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Engine Additives, ensuring durability and a precise fit for your Pontiac Catalina. Whether you’re driving a 1981 model or another popular model year like
1972,
1973,
1974,
1975,
1976,
1977,
1978,
1979, and
1980, we’ve got you covered. Purchasing Engine Additives 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 Engine Additives that fit your vehicle.
Essential 1981 Pontiac Catalina Engine Additives
Powertrax – No-Slip Traction System (Part No.9207822805)
from
$544.99
For vehicles that are driven daily, the Powertrax No-Slip Traction System is the latest design in quiet traction-adding differential technology. It combines the automatic street-friendly smooth operation of a limited-slip differential with the traction performance of a locking differential. The Powertrax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!The Powertrax® Lock-Right Locker provides outstanding traction for off-road machines and race vehicles. Powertrax No-Slip Traction Systems deliver excellent performance to street-driven cars and trucks.Powertrax® lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles. Powertrax® offers three levels of GRIP locking differentials, ranging from the clutch-type GRIP LS with a forged steel case, the gear-driven GRIP PRO and finally the GRIP LOK for extreme traction. Powertrax® = Extreme Traction Systems!
See More
Powertrax – Lock Right Locker (Part No.1910-LR)
from
$376.99
The Powertrax Lock-Right ultra-strength alloy locker’s straight-line performance is equal to a solid spool, but automatically unlocks in turns. Best suited for extreme off-road to severe on-road use, Powertrax Lock Right lockers replace the spider gears in your open differential carrier using basic tools and without affecting your ring and pinion settings. The whole job can be done in your driveway in a couple of hours, pin included! Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!The Powertrax® Lock-Right Locker provides outstanding traction for off-road machines and race vehicles. Powertrax No-Slip Traction Systems deliver excellent performance to street-driven cars and trucks.Powertrax® lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles. Powertrax® offers three levels of GRIP locking differentials, ranging from the clutch-type GRIP LS with a forged steel case, the gear-driven GRIP PRO and finally the GRIP LOK for extreme traction. Powertrax® = Extreme Traction Systems!
See More
Motive Gear – Differential Pinion Solid Spacer Kit w/Shims (Part No.4101)
Powertrax – Grip LS Traction System (Part No.LS231230)
from
$480.99
For vehicles that are driven daily, the Powertrax No-Slip Traction System is the latest design in quiet traction-adding differential technology. It combines the automatic street-friendly smooth operation of a limited-slip differential with the traction performance of a locking differential. The Powertrax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!
See More
Yukon Gear – Dura Grip Positraction For GM 8.5" With 28 Spline Axles (Part No.26015)
from
$859.99
The Yukon Dura Grip provides aggressive yet smooth traction to give you the confidence & performance you need. Get longer life and better traction with the heavy duty Yukon Dura Grip Positraction. The Yukon Dura Grip uses a nodular case and forged 4320 internals for added strength along with composite clutches for high performance and long life. All units are Rebuildable and many offer upgrades to increase aggressiveness for racing applications. Each unit carries a one year warranty against defects. This unit has larger bearing journals for added strength & uses heavy-duty carrier bearings & races.
Product Features:
See More
Product Features:
- Fits GM 8.5″ with 28 spline axles
- 2.73 ratio and up only
- 4-spring, clutch style positraction
- Internal gears are manufactured using forged 4320 steel and cut to provide stronger teeth
- Fully rebuildable
- Assembled in the USA
Powertrax – No-Slip Traction System (Part No.9207752605)
from
$518.99
For vehicles that are driven daily, the Powertrax No-Slip Traction System is the latest design in quiet traction-adding differential technology. It combines the automatic street-friendly smooth operation of a limited-slip differential with the traction performance of a locking differential. The Powertrax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!The Powertrax® Lock-Right Locker provides outstanding traction for off-road machines and race vehicles. Powertrax No-Slip Traction Systems deliver excellent performance to street-driven cars and trucks.Powertrax® lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles. Powertrax® offers three levels of GRIP locking differentials, ranging from the clutch-type GRIP LS with a forged steel case, the gear-driven GRIP PRO and finally the GRIP LOK for extreme traction. Powertrax® = Extreme Traction Systems!
See More
Richmond Gear – Differential Spool (Part No.81-1028-1)
from
$259.99
Richmond Gear is the leading manufacturer of professional quality, high-performance drivetrain products. Our complete line of products ranges from high performance ring-and-pinion sets for serious street and racing applications to torque-hungry manual transmissions and components. Richmond Gear products have been winners both at the Daytona 500 and U.S. Nationals for decades. WINNERS RUN RICHMOND!
Product Features:
See More
Product Features:
- For over 80-years, the Richmond Double-Diamond logo has represented some of the highest quality gears in the racing industry. Winners Run Richmond!
- The superior quality of Richmond gearsets is a result of outstanding design, world class manufacturing and an extensive testing process that is performed on all products.
- Richmond performance gearsets have been winners for decades at: NHRA, NMRA, NMCA, Daytona 500, WISSOTA and U.S. Nationals.
- Richmond Gear is a leading manufacturer of high performance ring and pinion gearsets and drivetrain components, backed by a two year warranty.
- Engineered to perform faster and be more reliable, Richmond performance drivetrain products are the result of a continuous research and development program combined with state-of-the-art manufacturing capabilities.
Powertrax – Lock Right Locker (Part No.1940-LR)
from
$441.99
The Powertrax Lock-Right ultra-strength alloy locker’s straight-line performance is equal to a solid spool, but automatically unlocks in turns. Best suited for extreme off-road to severe on-road use, Powertrax Lock Right lockers replace the spider gears in your open differential carrier using basic tools and without affecting your ring and pinion settings. The whole job can be done in your driveway in a couple of hours, pin included! Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!The Powertrax® Lock-Right Locker provides outstanding traction for off-road machines and race vehicles. Powertrax No-Slip Traction Systems deliver excellent performance to street-driven cars and trucks.Powertrax® lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles. Powertrax® offers three levels of GRIP locking differentials, ranging from the clutch-type GRIP LS with a forged steel case, the gear-driven GRIP PRO and finally the GRIP LOK for extreme traction. Powertrax® = Extreme Traction Systems!
See More
Richmond Gear – Differential Spool (Part No.81-1030-1)
from
$259.99
Richmond Gear is the leading manufacturer of professional quality, high-performance drivetrain products. Our complete line of products ranges from high performance ring-and-pinion sets for serious street and racing applications to torque-hungry manual transmissions and components. Richmond Gear products have been winners both at the Daytona 500 and U.S. Nationals for decades. WINNERS RUN RICHMOND!
Product Features:
See More
Product Features:
- For over 80-years, the Richmond Double-Diamond logo has represented some of the highest quality gears in the racing industry. Winners Run Richmond!
- The superior quality of Richmond gearsets is a result of outstanding design, world class manufacturing and an extensive testing process that is performed on all products.
- Richmond performance gearsets have been winners for decades at: NHRA, NMRA, NMCA, Daytona 500, WISSOTA and U.S. Nationals.
- Richmond Gear is a leading manufacturer of high performance ring and pinion gearsets and drivetrain components, backed by a two year warranty.
- Engineered to perform faster and be more reliable, Richmond performance drivetrain products are the result of a continuous research and development program combined with state-of-the-art manufacturing capabilities.
Richmond Gear – Differential Spool (Part No.81-1235-1)
from
$346.99
Richmond Gear is the leading manufacturer of professional quality, high-performance drivetrain products. Our complete line of products ranges from high performance ring-and-pinion sets for serious street and racing applications to torque-hungry manual transmissions and components. Richmond Gear products have been winners both at the Daytona 500 and U.S. Nationals for decades. WINNERS RUN RICHMOND!
Product Features:
See More
Product Features:
- For over 80-years, the Richmond Double-Diamond logo has represented some of the highest quality gears in the racing industry. Winners Run Richmond!
- The superior quality of Richmond gearsets is a result of outstanding design, world class manufacturing and an extensive testing process that is performed on all products.
- Richmond performance gearsets have been winners for decades at: NHRA, NMRA, NMCA, Daytona 500, WISSOTA and U.S. Nationals.
- Richmond Gear is a leading manufacturer of high performance ring and pinion gearsets and drivetrain components, backed by a two year warranty.
- Engineered to perform faster and be more reliable, Richmond performance drivetrain products are the result of a continuous research and development program combined with state-of-the-art manufacturing capabilities.
USA Standard Gear – Spartan Spring & Pin Kit, Fits Smaller Designs (Part No.17011)
from
$26.99
Spartan spring & pin kit, fits smaller designs.
Product Features:
See More
Product Features:
- Replacement spring and pin kit for Spartan Locker
- Fits Dana 30, Dana 44, AMC Model 20, AMC Model 35, and Toyota designs
- Includes 4 springs and 4 alignment pins
Richmond Gear – Differential Spool (Part No.81-1033-1)
from
$267.99
Richmond Gear is the leading manufacturer of professional quality, high-performance drivetrain products. Our complete line of products ranges from high performance ring-and-pinion sets for serious street and racing applications to torque-hungry manual transmissions and components. Richmond Gear products have been winners both at the Daytona 500 and U.S. Nationals for decades. WINNERS RUN RICHMOND!
Product Features:
See More
Product Features:
- For over 80-years, the Richmond Double-Diamond logo has represented some of the highest quality gears in the racing industry. Winners Run Richmond!
- The superior quality of Richmond gearsets is a result of outstanding design, world class manufacturing and an extensive testing process that is performed on all products.
- Richmond performance gearsets have been winners for decades at: NHRA, NMRA, NMCA, Daytona 500, WISSOTA and U.S. Nationals.
- Richmond Gear is a leading manufacturer of high performance ring and pinion gearsets and drivetrain components, backed by a two year warranty.
- Engineered to perform faster and be more reliable, Richmond performance drivetrain products are the result of a continuous research and development program combined with state-of-the-art manufacturing capabilities.
USA Standard Gear – 8.5" Oldsmobile 31Spline 12 Bolt (Factory 3.08 Or 3.23, Or Richmond Gear Ring & Pinions) (Part No.59006)
from
$1020.00
8.5″ Oldsmobile 31spline 12 bolt (factory 3.08 or 3.23, or Richmond gear ring & pinions).
Product Features:
See More
Product Features:
- Positraction
- Fits 8.5″ Oldsmobile
- 12 bolt design
- 31 spline
- OEM 3.08 and 3.23 gear sets only
Popular 1981 Pontiac Catalina Engine Additives Categories
Most Popular Posi Units and Components for 1981 Pontiac Catalinas
Enhance your 1981 Pontiac Catalina with one of the 10 Posi Units and Components we have in stock, starting at just $26.99.
USA Standard Gear – Spartan Spring & Pin Kit, Fits Smaller Designs (Part No.17011)
from
$26.99
Spartan spring & pin kit, fits smaller designs.
Product Features:
See More
Product Features:
- Replacement spring and pin kit for Spartan Locker
- Fits Dana 30, Dana 44, AMC Model 20, AMC Model 35, and Toyota designs
- Includes 4 springs and 4 alignment pins
Powertrax – Lock Right Locker (Part No.1910-LR)
from
$376.99
The Powertrax Lock-Right ultra-strength alloy locker’s straight-line performance is equal to a solid spool, but automatically unlocks in turns. Best suited for extreme off-road to severe on-road use, Powertrax Lock Right lockers replace the spider gears in your open differential carrier using basic tools and without affecting your ring and pinion settings. The whole job can be done in your driveway in a couple of hours, pin included! Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!The Powertrax® Lock-Right Locker provides outstanding traction for off-road machines and race vehicles. Powertrax No-Slip Traction Systems deliver excellent performance to street-driven cars and trucks.Powertrax® lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles.Powertrax® offers three levels of GRIP locking differentials, ranging from the clutch-type GRIP LS with a forged steel case, the gear-driven GRIP PRO and finally the GRIP LOK for extreme traction.Powertrax® = Extreme Traction Systems!
See More
USA Standard Gear – 8.5" Oldsmobile 31Spline 12 Bolt (Factory 3.08 Or 3.23, Or Richmond Gear Ring & Pinions) (Part No.59006)
from
$1020.00
8.5″ Oldsmobile 31spline 12 bolt (factory 3.08 or 3.23, or Richmond gear ring & pinions).
Product Features:
See More
Product Features:
- Positraction
- Fits 8.5″ Oldsmobile
- 12 bolt design
- 31 spline
- OEM 3.08 and 3.23 gear sets only
Yukon Gear – Dura Grip Positraction For GM 8.5" With 28 Spline Axles (Part No.26015)
from
$859.99
The Yukon Dura Grip provides aggressive yet smooth traction to give you the confidence & performance you need. Get longer life and better traction with the heavy duty Yukon Dura Grip Positraction. The Yukon Dura Grip uses a nodular case and forged 4320 internals for added strength along with composite clutches for high performance and long life. All units are Rebuildable and many offer upgrades to increase aggressiveness for racing applications. Each unit carries a one year warranty against defects. This unit has larger bearing journals for added strength & uses heavy-duty carrier bearings & races.
Product Features:
See More
Product Features:
- Fits GM 8.5″ with 28 spline axles
- 2.73 ratio and up only
- 4-spring, clutch style positraction
- Internal gears are manufactured using forged 4320 steel and cut to provide stronger teeth
- Fully rebuildable
- Assembled in the USA
Powertrax – No-Slip Traction System (Part No.9207752605)
from
$518.99
For vehicles that are driven daily, the Powertrax No-Slip Traction System is the latest design in quiet traction-adding differential technology. It combines the automatic street-friendly smooth operation of a limited-slip differential with the traction performance of a locking differential. The Powertrax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!The Powertrax® Lock-Right Locker provides outstanding traction for off-road machines and race vehicles. Powertrax No-Slip Traction Systems deliver excellent performance to street-driven cars and trucks.Powertrax® lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles.Powertrax® offers three levels of GRIP locking differentials, ranging from the clutch-type GRIP LS with a forged steel case, the gear-driven GRIP PRO and finally the GRIP LOK for extreme traction.Powertrax® = Extreme Traction Systems!
See More
Powertrax – Grip LS Traction System (Part No.LS231230)
from
$480.99
For vehicles that are driven daily, the Powertrax No-Slip Traction System is the latest design in quiet traction-adding differential technology. It combines the automatic street-friendly smooth operation of a limited-slip differential with the traction performance of a locking differential. The Powertrax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!
See More
Richmond Gear – Differential Spool (Part No.81-1033-1)
from
$267.99
Richmond Gear is the leading manufacturer of professional quality, high-performance drivetrain products. Our complete line of products ranges from high performance ring-and-pinion sets for serious street and racing applications to torque-hungry manual transmissions and components. Richmond Gear products have been winners both at the Daytona 500 and U.S. Nationals for decades. WINNERS RUN RICHMOND!
Product Features:
See More
Product Features:
- For over 80-years, the Richmond Double-Diamond logo has represented some of the highest quality gears in the racing industry. Winners Run Richmond!
- The superior quality of Richmond gearsets is a result of outstanding design, world class manufacturing and an extensive testing process that is performed on all products.
- Richmond performance gearsets have been winners for decades at: NHRA, NMRA, NMCA, Daytona 500, WISSOTA and U.S. Nationals.
- Richmond Gear is a leading manufacturer of high performance ring and pinion gearsets and drivetrain components, backed by a two year warranty.
- Engineered to perform faster and be more reliable, Richmond performance drivetrain products are the result of a continuous research and development program combined with state-of-the-art manufacturing capabilities.
Richmond Gear – Differential Spool (Part No.81-1028-1)
from
$259.99
Richmond Gear is the leading manufacturer of professional quality, high-performance drivetrain products. Our complete line of products ranges from high performance ring-and-pinion sets for serious street and racing applications to torque-hungry manual transmissions and components. Richmond Gear products have been winners both at the Daytona 500 and U.S. Nationals for decades. WINNERS RUN RICHMOND!
Product Features:
See More
Product Features:
- For over 80-years, the Richmond Double-Diamond logo has represented some of the highest quality gears in the racing industry. Winners Run Richmond!
- The superior quality of Richmond gearsets is a result of outstanding design, world class manufacturing and an extensive testing process that is performed on all products.
- Richmond performance gearsets have been winners for decades at: NHRA, NMRA, NMCA, Daytona 500, WISSOTA and U.S. Nationals.
- Richmond Gear is a leading manufacturer of high performance ring and pinion gearsets and drivetrain components, backed by a two year warranty.
- Engineered to perform faster and be more reliable, Richmond performance drivetrain products are the result of a continuous research and development program combined with state-of-the-art manufacturing capabilities.
Richmond Gear – Differential Spool (Part No.81-1030-1)
from
$259.99
Richmond Gear is the leading manufacturer of professional quality, high-performance drivetrain products. Our complete line of products ranges from high performance ring-and-pinion sets for serious street and racing applications to torque-hungry manual transmissions and components. Richmond Gear products have been winners both at the Daytona 500 and U.S. Nationals for decades. WINNERS RUN RICHMOND!
Product Features:
See More
Product Features:
- For over 80-years, the Richmond Double-Diamond logo has represented some of the highest quality gears in the racing industry. Winners Run Richmond!
- The superior quality of Richmond gearsets is a result of outstanding design, world class manufacturing and an extensive testing process that is performed on all products.
- Richmond performance gearsets have been winners for decades at: NHRA, NMRA, NMCA, Daytona 500, WISSOTA and U.S. Nationals.
- Richmond Gear is a leading manufacturer of high performance ring and pinion gearsets and drivetrain components, backed by a two year warranty.
- Engineered to perform faster and be more reliable, Richmond performance drivetrain products are the result of a continuous research and development program combined with state-of-the-art manufacturing capabilities.
Motive Gear – Differential Pinion Solid Spacer Kit w/Shims (Part No.4101)
FAQs for 1981 Pontiac Catalina Engine Additives
What are the best-selling Engine Additives for 1981 Pontiac Catalinas?
Out of 10 Engine Additives that fit 1981 Pontiac Catalinas, the following parts are the top sellers:
- Spartan Spring & Pin Kit, Fits Smaller Designs (11599232) – $26.99
- Lock Right Locker (10461151) – $376.99
- 8.5" Oldsmobile 31Spline 12 Bolt (Factory 3.08 Or 3.23, Or Richmond Gear Ring & Pinions) (11644985) – $1,020.00
What’s the price range for 1981 Pontiac Catalina Engine Additives?
The prices of Engine Additives for the 1981 Pontiac Catalina range from $26.99 up to $1,020.00 for the most premium parts.
What is the average price of an Engine Additive for a 1981 Pontiac Catalina?
The average price for Engine Additives for the 1981 Pontiac Catalina is $412.59. Keep in mind the variety of part types within our Engine Additive category, where you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Engine Additives for other Pontiac Catalina model years?
What are the cheapest Engine Additives for my 1981 Pontiac Catalina?
The cheapest 1981 Pontiac Catalina Engine Additives we carry are:
- Spartan Spring & Pin Kit, Fits Smaller Designs (11599232) – $26.99
- Differential Pinion Solid Spacer Kit w/Shims (19640051) – $53.99
- Differential Spool (10562613) – $259.99
- Differential Spool (10563565) – $259.99
- Differential Spool (10563560) – $267.99
Does Advance Auto Parts sell Engine Additives for any other 1981 Pontiac models?
Yes. We stock Engine Additives for 4 other popular 1981 Pontiac models. Some of the most popular are 1981 Grand Prix Engine Additives, 1981 Bonneville Engine Additives, 1981 Firebird Engine Additives, 1981 LeMans Engine Additives, and 1981 Grand Lemans Engine Additives.
What types of Engine Additives do you sell for my 1981 Pontiac Catalina?
We currently have just 1 Engine Additive in stock for a 1981 Pontiac Catalina, and as of 3/1/26, it is a Posi Units and Component.
Can I get help with 1981 Pontiac Catalina Engine Additive orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Pontiac Engine Additives and more.
What is your return policy for Pontiac Catalina Engine Additives?
Advance Auto Parts keeps returns simple. For new Pontiac Catalina Engine Additives and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.