Swap Block Mock Up Cummins 3.9 4BT Engine Block | GF-EJ-CUMMINS-4BT
SKU: 53404458795

Swap Block Mock Up Cummins 3.9 4BT Engine Block | GF-EJ-CUMMINS-4BT

Sale price$161.51 Regular price$179.46
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 8 - Jul 13

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Swap Block Mock Up Cummins 3.9 4BT Engine Block | GF-EJ-CUMMINS-4BTEngine: Cummins 3. 9 4BT Years: 1989 1998 Our patent pending tab and slot version of the mock up block provides accurate mounting positions of engine accessories and bolt ons. Weighs only 26 lbs This unique design is lightweight and comes disassembled for ease of shipping and storage. Precision formed returns on all weight bearing components and tight tolerance slots create a rigid and accurate representation of the Cummins 4BT 3. 9L engine block

  • Engine: Cummins 3.9 4BT
  • Years: 1989-1998
  • Our patent-pending tab-and-slot version of the mock up block provides accurate mounting positions of engine accessories and bolt-ons.
  • Weighs only 26 lbs
  • This unique design is lightweight and comes disassembled for ease of shipping and storage.
  • Precision formed returns on all weight-bearing components and tight tolerance slots create a rigid and accurate representation of the Cummins 4BT 3.9L engine block compared to bolt-together types.
  • One tool accomplishes accurate placement of a 4BT Cummins engine into the chassis build of your choice.
  • Easily positioned by hand, the days of slinging an engine on a crane in and out of your build are over.
  • It's designed to bolt to your transmission while also permitting the attachment of oil pan, motor mounts, header, front timing cover, oil filter housing, and intake.
  • Save time and money and work more safely.
  • Durable steel construction resists heat from welding, so unlike foam blocks, custom motor mounts can be fabricated right on the block.
  • Comes with hardware for exhaust, motor mounts, bellhousing, oil pan, and timing cover.

NOTE: The 4BT was used in commercial vehicles and industrial applications, so some variations to bolt patterns may be seen.?

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 53404458795

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.0 ★★★★★
Based on 738 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
B
Verified Purchase
Bill
Massapequa, US
★★★★★ 5
Satisfied!
Size: 5 L
I absolutely love this product—I've already used it multiple times. The price is affordable, too. Thank you to the seller! Five stars!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
Y
Verified Purchase
Yesuaini99
San Leandro, US
★★★★★ 5
I just got it changed about 30 min ago and the engine sounds like a little cat
Size: 5 L
My Audi factory setting says I should use VW 508.00. Somewhere online it says 5w-40. It's 82000 miles and I decided to give it a shot to go 0W-20 which is what VW508.00 is. I just got it changed about 30 min ago and the engine sounds like a little cat. The gas pedal feel is very smooth, there's definitely less resistance when pushing forward. In Sports mode driving, the engine is not as loud and the lag or drag is noticeably less. And when it hits 100k, I will do a engine flush to see if I can get further improvements. So far, I really love Liqui Moly. I used to use it on my S500 and it was very smooth. A little more money goes a long way! Don't settle for less for your German cars. Update: I just did another 1000 miles in a week to Vegas and back. The fuel economy improved about 20%. The power increase is amazing. I could notice when I am going fast, the sustained speed at high speed is easy and continuous, It doesn't just hit a snag when your foot is off the pedal. And the engine is definitely a lot quieter and smoother. I am amazed at the overall improvement after using this oil. No other oil will do from now on.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2018
T
Verified Purchase
Tv
Charlottesville, US
★★★★★ 5
Engine Oil
Size: 5 L
Perfect for Nissan Altima 2018 . Huge difference .
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 15, 2026
J
Verified Purchase
Jorge mayre
Dallas, US
★★★★★ 5
Liqui moly
Size: 1 L
Great product makes the engine work very quiet
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 15, 2025
A
Verified Purchase
Alex Mathews
West Palm Beach, US
★★★★★ 5
Do it!
Size: 5 L
Use it in a 14 Sierra. Get about 7500 miles an oil change going off the oil life monitor but I drive rough and the trucks modded. Pricier than others, but I feel it’s worth it. Truck runs smoother than what was in it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 19, 2025

recommand products