1981 Pontiac Bonneville Engine Internals
Keep Your 1981 Pontiac Bonneville in Top Shape with Quality Engine Internals
Whether you’re repairing or upgrading your Engine Internal, using high-quality parts is key to keeping your 1981 Pontiac Bonneville looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Standard Piston Rings, Standard Rod Bearing Sets, and Crankshaft Bolts. 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 Bonneville Engine Internal at Advance Auto Parts is around $61.16, with a range that starts at $3.25 and goes up to $354.99. With 30 options in stock from 3 trusted brands, finding the right fit is easy. Popular picks like National Engine Crankshaft Seal, 472082, Sealed Power Engine Connecting Rod Bearing Set, 6-3755A, and Sealed Power Engine Crankshaft Main Bearing Set, 4281M start at just $18.29 and offer a great balance of form and function.
Explore Related Parts
While you’re upgrading or replacing your Engine Internal, don’t forget to check out other key components like Engine Gaskets and Seals and Engine Timing Parts. At Advance Auto Parts, we’re here to help you keep your 1981 Pontiac Bonneville in peak condition, inside and out.
Find Your Specific 1981 Pontiac Bonneville Engine Internals
Looking for the perfect Engine Internal for your 1981 Pontiac Bonneville? You’re in the right place. Below, you’ll find links to various types of Engine Internals that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Engine Internals, ensuring durability and a precise fit for your Pontiac Bonneville. Whether you’re driving a 1981 model or another popular model year like
1997,
1998,
1999,
2000,
2001,
2002,
2003,
2004, and
2005, we’ve got you covered. Purchasing Engine Internals 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 Internals that fit your vehicle.
Essential 1981 Pontiac Bonneville Engine Internals
Sealed Power – Sealed Power Engine Connecting Rod Bearing, 2555CP 20 (Part No.2555CP 20)
from
$6.59
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More
Sealed Power – Sealed Power Engine Connecting Rod Bearing, 3760A 20 (Part No.3760A 20)
from
$6.79
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More
Sealed Power – Sealed Power Engine Connecting Rod Bearing Set, 6-3755A (Part No.6-3755A)
from
$43.99
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More
Sealed Power – Sealed Power Engine Connecting Rod Bearing Set, 8-2555CP (Part No.8-2555CP)
from
$95.99
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More
Sealed Power – Sealed Power Engine Connecting Rod Bearing Set, 8-2555CP 10 (Part No.8-2555CP 10)
from
$79.99
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More
Sealed Power – Sealed Power Engine Connecting Rod Bearing Set, 8-2555CP 1 (Part No.8-2555CP 1)
from
$156.99
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More
Sealed Power – Sealed Power Engine Connecting Rod Bearing Set, 8-1555CPA 20 (Part No.8-1555CPA 20)
from
$69.99
Sealed Power® Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.
See More
Sealed Power – Sealed Power Engine Crankshaft Main Bearing Set, 7288MA (Part No.7288MA)
from
$94.99
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More
Sealed Power – Sealed Power Engine Crankshaft Main Bearing Set, 4281M (Part No.4281M)
from
$129.99
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More
Sealed Power – Sealed Power Engine Crankshaft Main Bearing Set, 4418M (Part No.4418M)
from
$98.99
Sealed Power® Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.
See More
Mr. Gasket – Mr. Gasket Ultra Seal: Harmonic Balancer Bolt/Washer Kit, 945G (Part No.945G)
from
$16.09
This is a high quality bolt set that is made of grade 8 steel and will meet your requirements for a quality bolt set, this set will work on original equipment, high performance street, drag or circle track applications.
See More
Mr. Gasket – Mr. Gasket Ultra Seal: Harmonic Balancer Bolt/Washer Kit, 7845 (Part No.7845)
from
$33.59
Secure the harmonic balancer or dampener on your Chevy. Works on original equipment, high performance street, drag or circle track applications. Features a heat treated black oxide coated Grade 8 alloy steel bolt for strength with a tall hex head to prevent wrench from slipping. An extra thick parallel ground washer provides accurate, uniform torque, and a lock washer is also included.
See More
ARP Auto Racing – "ARP Auto Racing For Use With Chevy Small Block, 5/8"" Socket Size, 3/4"" – 16 Thread Size, 134-2501" (Part No.134-2501)
from
$39.99
As the crankshaft flexes and twists, the balancer absorbs incredible amounts of kinetic energy. To ensure that the balancer is locked in position, ARP has developed these ultra strong 200,000 PSI bolts that let you exert maximum clamping force. Special features include 1/4 Inch thick, wide area washer and an extra tall 12 point head that accepts a deep socket and eliminates the worry of stripping the head.
See More
Sealed Power – Sealed Power Engine Piston Ring Set, E-299K 20 (Part No.E-299K 20)
from
$79.99
Sealed Power® Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.
See More
Sealed Power – Sealed Power Engine Piston Ring Set, E-459X 20 (Part No.E-459X 20)
from
$67.99
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More
Sealed Power – Sealed Power Engine Piston Ring Set, E-299K (Part No.E-299K)
from
$82.99
Sealed Power® Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.
See More
Sealed Power – Sealed Power Engine Piston Ring Set, E-919K 30 (Part No.E-919K 30)
from
$179.99
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More
Sealed Power – Sealed Power Engine Piston Ring Set, E-300K 30 (Part No.E-300K 30)
from
$118.99
Sealed Power® Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.
See More
Sealed Power – Sealed Power Engine Piston Ring Set, E-245K 30 (Part No.E-245K 30)
from
$82.99
Sealed Power® Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.
See More
Sealed Power – Sealed Power Engine Crankshaft Main Bearing Set, 4663M 1 (Part No.4663M 1)
from
$66.99
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More
Sealed Power – Sealed Power Engine Crankshaft Main Bearing Set, 4663M 30 (Part No.4663M 30)
from
$62.99
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More
Sealed Power – Sealed Power Engine Crankshaft Main Bearing Set, 4040M 30 (Part No.4040M 30)
from
$178.99
Sealed Power® Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.
See More
Sealed Power – Sealed Power Engine Connecting Rod Bearing, 3760A (Part No.3760A)
from
$6.29
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More
Sealed Power – Sealed Power Engine Connecting Rod Bearing, 1020A (Part No.1020A)
from
$12.99
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More
Sealed Power – Sealed Power Engine Connecting Rod Bearing, 1555CPA (Part No.1555CPA)
from
$15.29
Sealed Power® Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.
See More
Felpro – Felpro Engine Crankshaft Seal Kit, BS 40013 (Part No.BS 40013)
from
$26.99
Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
See More
National – National Engine Crankshaft Seal, 5118 (Part No.5118)
from
$42.49
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.
See More
National – National Engine Crankshaft Seal, 5274 (Part No.5274)
from
$33.99
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.
See More
Popular 1981 Pontiac Bonneville Engine Internals Categories
Most Popular Standard Piston Rings for 1981 Pontiac Bonnevilles
Enhance your 1981 Pontiac Bonneville with one of the 2 Standard Piston Rings we have in stock, starting at just $55.99.
Sealed Power – Sealed Power Engine Piston Ring Set, E-288X (Part No.E-288X)
from
$55.99
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More
Sealed Power – Sealed Power Engine Piston Ring Set, E-288K 30 (Part No.E-288K 30)
from
$85.99
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More
Best-Selling 1981 Pontiac Bonneville Standard Rod Bearing Sets
Upgrade your Bonneville with one of our 3 best-selling Standard Rod Bearing Sets.
Sealed Power – Sealed Power Engine Connecting Rod Bearing Set, 6-3755A (Part No.6-3755A)
from
$43.99
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More
Sealed Power – Sealed Power Engine Connecting Rod Bearing Set, 8-2500RAA (Part No.8-2500RAA)
from
$38.99
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More
Sealed Power – Sealed Power Engine Connecting Rod Bearing Set, 8-2500RAA 10 (Part No.8-2500RAA 10)
from
$38.99
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More
Top-Quality Crankshaft Bolts for 1981 Pontiac Bonnevilles
Choose a high-quality OEM or aftermarket Crankshaft Bolt for Pontiac Bonnevilles and enjoy top-notch performance from $39.99.
ARP Auto Racing – "ARP Auto Racing For Use With Chevy Small Block, 5/8"" Socket Size, 3/4"" – 16 Thread Size, 134-2501" (Part No.134-2501)
from
$39.99
As the crankshaft flexes and twists, the balancer absorbs incredible amounts of kinetic energy. To ensure that the balancer is locked in position, ARP has developed these ultra strong 200,000 PSI bolts that let you exert maximum clamping force. Special features include 1/4 Inch thick, wide area washer and an extra tall 12 point head that accepts a deep socket and eliminates the worry of stripping the head.
See More
ARP Auto Racing – ARP Auto Racing For Use With Chevy Small Block Large Journal, 4 Bolt Main, Hex Head, Chrome Moly, 134-5202 (Part No.134-5202)
from
$85.99
Far superior to any other main bolt kit offered for use in competition engines, ARP main bolts are designed to meet the exacting standards and demands of professional engine builders. Forged from 8740 chrome moly, all bolts feature generous under head radius and rolled threads for the utmost reliability. The threads are rolled after heat treating, which makes them about 1000 Percent longer fatigue life than most main bolts, which are threaded prior to heat treating. Available in the popular High Performance Series, which, at a nominal rating of 180,000 PSI, is a premium replacement for OEM fasteners, or the 200,000 PSI nominal rated Pro Series, application specific main bolts with reduced wrenching head and are designed for use in competition applications. Parallel ground, hardened washers are included with each kit.
See More
ARP Auto Racing – ARP Auto Racing For Use With Chevy Gen Iii/Ls Series Small Block/ Gmpp Lsx Block, Hex Head, 234-5608 (Part No.234-5608)
from
$354.99
There are many important reasons to use ARP main stud kits, including the elimination of main cap walk and fretting, as well as protecting the threads in your engine block. All kits come complete with hardened parallel ground washers and high quality nuts. Some applications have provisions for mounting wind age trays and have specially designed standoff studs with serrated lock nuts to position the wind age tray and lock it securely in place. The studs are manufactured from 8740 chrome moly steel, heat treated in-house to 200,000 Pounds Per Square Inch tensile strength, and precision J-form threads rolled after heat treat to create a fastener that has threads 1000 Percent stronger than others.
See More
ARP Auto Racing – "ARP Auto Racing For Use With Chevy Small Block, 13/16"" Socket Size, 2.470"" Under Head L, 234-2501" (Part No.234-2501)
from
$46.99
As the crankshaft flexes and twists, the balancer absorbs incredible amounts of kinetic energy. To ensure that the balancer is locked in position, ARP has developed these ultra strong 200,000 Pounds Per Square Inch bolts that let you exert maximum clamping force. Special features comes with 1/4 Inch thick, wide area washer and an extra tall 12 point head that accepts a deep socket and eliminates the worry of stripping the head.
See More
Top Picks for 1981 Pontiac Bonneville Standard Individual Rod Bearings
Invest in one of our 4 durable Standard Individual Rod Bearings for your 1981 Pontiac, knowing you’re getting trusted brands and expert craftsmanship.
Sealed Power – Sealed Power Engine Connecting Rod Bearing, 3045A (Part No.3045A)
from
$10.79
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More
Sealed Power – Sealed Power Engine Connecting Rod Bearing, 2500RAA (Part No.2500RAA)
from
$9.69
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More
Sealed Power – Sealed Power Engine Connecting Rod Bearing, 3045A 10 (Part No.3045A 10)
from
$9.39
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More
Sealed Power – Sealed Power Engine Connecting Rod Bearing, 3755A (Part No.3755A)
from
$6.29
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More
Crankshaft Seals for 1981 Pontiac Bonnevilles
Make a smart move for your 1981 Pontiac Bonneville with products all priced from $18.29 to $42.49.
National – National Engine Crankshaft Seal, 472082 (Part No.472082)
from
$18.29
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.
See More
National – National Engine Crankshaft Seal, 5118 (Part No.5118)
from
$42.49
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.
See More
FAQs for 1981 Pontiac Bonneville Engine Internals
What are the best-selling Engine Internals for 1981 Pontiac Bonnevilles?
Out of 30 Engine Internals that fit 1981 Pontiac Bonnevilles, the following parts are the top sellers:
- National Engine Crankshaft Seal, 472082 (18444232) – $18.29
- Sealed Power Engine Connecting Rod Bearing Set, 6-3755A (19693597) – $43.99
- Sealed Power Engine Crankshaft Main Bearing Set, 4281M (3695336) – $129.99
What’s the price range for 1981 Pontiac Bonneville Engine Internals?
The prices of Engine Internals for the 1981 Pontiac Bonneville range from $3.25 up to $354.99 for the most premium parts.
What is the average price of an Engine Internal for a 1981 Pontiac Bonneville?
The average price for Engine Internals for the 1981 Pontiac Bonneville is $61.16. Keep in mind the variety of part types within our Engine Internal 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 Internals for other Pontiac Bonneville model years?
What are the cheapest Engine Internals for my 1981 Pontiac Bonneville?
The cheapest 1981 Pontiac Bonneville Engine Internals we carry are:
- Sealed Power Engine Connecting Rod Bearing, 3755A (3695204) – $6.29
- Sealed Power Engine Connecting Rod Bearing, 2500RAA 10 (3704467) – $9.19
- Sealed Power Engine Connecting Rod Bearing, 3045A 10 (3704602) – $9.39
- Sealed Power Engine Connecting Rod Bearing, 2500RAA (3695069) – $9.69
- Sealed Power Engine Connecting Rod Bearing, 3045A (19694886) – $10.79
Does Advance Auto Parts sell Engine Internals for any other 1981 Pontiac models?
Yes. We stock Engine Internals for 5 other popular 1981 Pontiac models. Some of the most popular are 1981 Grand Prix Engine Internals, 1981 Firebird Engine Internals, 1981 LeMans Engine Internals, 1981 Catalina Engine Internals, and 1981 Phoenix Engine Internals.
What types of Engine Internals do you sell for my 1981 Pontiac Bonneville?
As of 8/2/26, these are some of the most in-demand types of Engine Internals for a 1981 Pontiac Bonneville:
Can I get help with 1981 Pontiac Bonneville Engine Internal orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Pontiac Engine Internals and more.
What is your return policy for Pontiac Bonneville Engine Internals?
Advance Auto Parts keeps returns simple. For new Pontiac Bonneville Engine Internals and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.